diff --git a/config/cms.php b/config/cms.php
index 4c838a026..790355414 100644
--- a/config/cms.php
+++ b/config/cms.php
@@ -298,6 +298,16 @@ return [
     | in cloud storage (ex. AWS, RackSpace) are valid for by setting
     | temporaryUrlTTL to a value in seconds to define a validity period. This
     | is only used for the 'uploads' config when using a supported cloud disk
+    |
+    | NOTE: If you have installed October in a subfolder, are using local
+    | storage and are not using a linkPolicy of 'force' you should include
+    | the path to the subfolder in the `path` option for these storage
+    | configurations.
+    |
+    | Example: October is installed under https://localhost/projects/october.
+    | You should then specify `/projects/october/storage/app/uploads` as the
+    | path for the uploads disk and `/projects/october/storage/app/media` as
+    | the path for the media disk.
     */
 
     'storage' => [
diff --git a/modules/backend/widgets/Filter.php b/modules/backend/widgets/Filter.php
index 5e97706ac..7b3a8b40e 100644
--- a/modules/backend/widgets/Filter.php
+++ b/modules/backend/widgets/Filter.php
@@ -208,7 +208,8 @@ class Filter extends WidgetBase
 
         switch ($scope->type) {
             case 'group':
-                $active = $this->optionsFromAjax(post('options.active'));
+                $data = json_decode(post('options'), true);
+                $active = $this->optionsFromAjax($data ?: null);
                 $this->setScopeValue($scope, $active);
                 break;
 
@@ -223,7 +224,8 @@ class Filter extends WidgetBase
                 break;
 
             case 'date':
-                $dates = $this->datesFromAjax(post('options.dates'));
+                $data = json_decode(post('options'), true);
+                $dates = $this->datesFromAjax($data['dates'] ?? null);
 
                 if (!empty($dates)) {
                     list($date) = $dates;
@@ -236,7 +238,8 @@ class Filter extends WidgetBase
                 break;
 
             case 'daterange':
-                $dates = $this->datesFromAjax(post('options.dates'));
+                $data = json_decode(post('options'), true);
+                $dates = $this->datesFromAjax($data['dates'] ?? null);
 
                 if (!empty($dates)) {
                     list($after, $before) = $dates;
@@ -251,7 +254,8 @@ class Filter extends WidgetBase
                 break;
 
             case 'number':
-                $numbers = $this->numbersFromAjax(post('options.numbers'));
+                $data = json_decode(post('options'), true);
+                $numbers = $this->numbersFromAjax($data['numbers'] ?? null);
 
                 if (!empty($numbers)) {
                     list($number) = $numbers;
@@ -264,7 +268,8 @@ class Filter extends WidgetBase
                 break;
 
             case 'numberrange':
-                $numbers = $this->numbersFromAjax(post('options.numbers'));
+                $data = json_decode(post('options'), true);
+                $numbers = $this->numbersFromAjax($data['numbers'] ?? null);
 
                 if (!empty($numbers)) {
                     list($min, $max) = $numbers;
diff --git a/modules/backend/widgets/filter/partials/_scope_date.htm b/modules/backend/widgets/filter/partials/_scope_date.htm
index 64701fd13..b8a019178 100644
--- a/modules/backend/widgets/filter/partials/_scope_date.htm
+++ b/modules/backend/widgets/filter/partials/_scope_date.htm
@@ -10,7 +10,7 @@
         'firstDay' => $scope->firstDay,
         'yearRange' => $scope->yearRange,
     ])) ?>"
-    <?php $scope->ignoreTimezone ? 'data-ignore-timezone' : ''; ?>
+    <?= $scope->ignoreTimezone ? 'data-ignore-timezone' : ''; ?>
 >
     <span class="filter-label"><?= e(trans($scope->label)) ?>:</span>
     <span class="filter-setting"><?= isset($dateStr) ? $dateStr : e(trans('backend::lang.filter.date_all')) ?></span>
diff --git a/modules/backend/widgets/filter/partials/_scope_daterange.htm b/modules/backend/widgets/filter/partials/_scope_daterange.htm
index 00cc7c77d..9c336385b 100644
--- a/modules/backend/widgets/filter/partials/_scope_daterange.htm
+++ b/modules/backend/widgets/filter/partials/_scope_daterange.htm
@@ -10,7 +10,7 @@
         'firstDay' => $scope->firstDay,
         'yearRange' => $scope->yearRange,
     ])) ?>"
-    <?php $scope->ignoreTimezone ? 'data-ignore-timezone' : ''; ?>
+    <?= $scope->ignoreTimezone ? 'data-ignore-timezone' : ''; ?>
 >
     <span class="filter-label"><?= e(trans($scope->label)) ?>:</span>
     <span class="filter-setting"><?= isset($afterStr) && isset($beforeStr) ? ($afterStr . ' → ' . $beforeStr) : e(trans('backend::lang.filter.date_all')) ?></span>
diff --git a/modules/system/assets/js/lang/lang.ar.js b/modules/system/assets/js/lang/lang.ar.js
index bc6151182..cc1f2223e 100644
--- a/modules/system/assets/js/lang/lang.ar.js
+++ b/modules/system/assets/js/lang/lang.ar.js
@@ -9,6 +9,7 @@ $.oc.langMessages['ar'] = $.extend(
 );
 
 //! moment.js locale configuration v2.22.2
+//!!! IMPORTANT - modified from default - see https://github.com/octobercms/october/issues/5213
 
 ;(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined'
@@ -19,27 +20,16 @@ $.oc.langMessages['ar'] = $.extend(
 
 
     var symbolMap = {
-        '1': '١',
-        '2': '٢',
-        '3': '٣',
-        '4': '٤',
-        '5': '٥',
-        '6': '٦',
-        '7': '٧',
-        '8': '٨',
-        '9': '٩',
-        '0': '٠'
-    }, numberMap = {
-        '١': '1',
-        '٢': '2',
-        '٣': '3',
-        '٤': '4',
-        '٥': '5',
-        '٦': '6',
-        '٧': '7',
-        '٨': '8',
-        '٩': '9',
-        '٠': '0'
+        '1': '1',
+        '2': '2',
+        '3': '3',
+        '4': '4',
+        '5': '5',
+        '6': '6',
+        '7': '7',
+        '8': '8',
+        '9': '9',
+        '0': '0'
     }, pluralForm = function (n) {
         return n === 0 ? 0 : n === 1 ? 1 : n === 2 ? 2 : n % 100 >= 3 && n % 100 <= 10 ? 3 : n % 100 >= 11 ? 4 : 5;
     }, plurals = {
@@ -124,9 +114,7 @@ $.oc.langMessages['ar'] = $.extend(
             yy : pluralize('y')
         },
         preparse: function (string) {
-            return string.replace(/[١٢٣٤٥٦٧٨٩٠]/g, function (match) {
-                return numberMap[match];
-            }).replace(/،/g, ',');
+            return string.replace(/،/g, ',');
         },
         postformat: function (string) {
             return string.replace(/\d/g, function (match) {
diff --git a/modules/system/assets/ui/js/filter.js b/modules/system/assets/ui/js/filter.js
index 708efa294..8c9563365 100644
--- a/modules/system/assets/ui/js/filter.js
+++ b/modules/system/assets/ui/js/filter.js
@@ -23,6 +23,7 @@
 
         this.options = options || {}
         this.scopeValues = {}
+        this.scopeAvailable = {}
         this.$activeScope = null
         this.activeScopeName = null
         this.isActiveScopeDirty = false
@@ -286,23 +287,24 @@
 
         var
             itemId = $item.data('item-id'),
-            items = this.scopeValues[this.activeScopeName],
-            fromItems = isDeselect ? items.active : items.available,
-            toItems = isDeselect ? items.available : items.active,
-            testFunc = function(item){ return item.id == itemId },
+            active = this.scopeValues[this.activeScopeName],
+            available = this.scopeAvailable[this.activeScopeName],
+            fromItems = isDeselect ? active : available,
+            toItems = isDeselect ? available : active,
+            testFunc = function(active){ return active.id == itemId },
             item = $.grep(fromItems, testFunc).pop(),
             filtered = $.grep(fromItems, testFunc, true)
 
         if (isDeselect)
-            this.scopeValues[this.activeScopeName].active = filtered
+            this.scopeValues[this.activeScopeName] = filtered
         else
-            this.scopeValues[this.activeScopeName].available = filtered
+            this.scopeAvailable[this.activeScopeName] = filtered
 
         if (item)
             toItems.push(item)
 
-        this.toggleFilterButtons(items)
-        this.updateScopeSetting(this.$activeScope, items.active.length)
+        this.toggleFilterButtons(active)
+        this.updateScopeSetting(this.$activeScope, isDeselect ? filtered.length : active.length)
         this.isActiveScopeDirty = true
         this.focusSearch()
     }
@@ -310,10 +312,17 @@
     FilterWidget.prototype.displayPopover = function($scope) {
         var self = this,
             scopeName = $scope.data('scope-name'),
-            data = this.scopeValues[scopeName],
+            data = null,
             isLoaded = true,
             container = false
 
+        if (typeof this.scopeAvailable[scopeName] !== "undefined" && this.scopeAvailable[scopeName]) {
+            data = $.extend({}, data, {
+                available: this.scopeAvailable[scopeName],
+                active: this.scopeValues[scopeName]
+            })
+        }
+
         // If the filter is running in a modal, popovers should be
         // attached to the modal container. This prevents z-index issues.
         var modalParent = $scope.parents('.modal-dialog')
@@ -390,7 +399,8 @@
         if (!data.active) data.active = []
         if (!data.available) data.available = []
 
-        this.scopeValues[scopeName] = data
+        this.scopeValues[scopeName] = data.active;
+        this.scopeAvailable[scopeName] = data.available;
 
         // Do not render if scope has changed
         if (scopeName != this.activeScopeName)
@@ -424,9 +434,9 @@
         /*
          * Ensure any active items do not appear in the search results
          */
-        if (items.active.length) {
+        if (items.length) {
             var activeIds = []
-            $.each(items.active, function (key, obj) {
+            $.each(items, function (key, obj) {
                 activeIds.push(obj.id)
             })
 
@@ -457,7 +467,7 @@
             buttonContainer = $('#controlFilterPopover .filter-buttons')
 
         if (data) {
-            data.active.length > 0 ? buttonContainer.show() : buttonContainer.hide()
+            data.length > 0 ? buttonContainer.show() : buttonContainer.hide()
         } else {
             items.children().length > 0 ? buttonContainer.show() : buttonContainer.hide()
         }
@@ -473,7 +483,7 @@
         var self = this,
             data = {
                 scopeName: scopeName,
-                options: this.scopeValues[scopeName]
+                options: JSON.stringify(this.scopeValues[scopeName])
             }
 
         $.oc.stripeLoadIndicator.show()
@@ -541,6 +551,7 @@
 
         if (isReset) {
             this.scopeValues[scopeName] = null
+            this.scopeAvailable[scopeName] = null
             this.updateScopeSetting(this.$activeScope, 0)
         }
 
diff --git a/modules/system/assets/ui/storm-min.js b/modules/system/assets/ui/storm-min.js
index 8803506a3..632ec830d 100644
--- a/modules/system/assets/ui/storm-min.js
+++ b/modules/system/assets/ui/storm-min.js
@@ -3044,6 +3044,7 @@ $.fn.toolbar.noConflict=function(){$.fn.toolbar=old
 return this}
 $(document).on('render',function(){$('[data-control=toolbar]').toolbar()})}(window.jQuery);+function($){"use strict";var FilterWidget=function(element,options){this.$el=$(element);this.options=options||{}
 this.scopeValues={}
+this.scopeAvailable={}
 this.$activeScope=null
 this.activeScopeName=null
 this.isActiveScopeDirty=false
@@ -3148,18 +3149,19 @@ $item.addClass('animate-enter').prependTo($otherContainer).one('webkitAnimationE
 if(!this.scopeValues[this.activeScopeName])
 return
 var
-itemId=$item.data('item-id'),items=this.scopeValues[this.activeScopeName],fromItems=isDeselect?items.active:items.available,toItems=isDeselect?items.available:items.active,testFunc=function(item){return item.id==itemId},item=$.grep(fromItems,testFunc).pop(),filtered=$.grep(fromItems,testFunc,true)
+itemId=$item.data('item-id'),active=this.scopeValues[this.activeScopeName],available=this.scopeAvailable[this.activeScopeName],fromItems=isDeselect?active:available,toItems=isDeselect?available:active,testFunc=function(active){return active.id==itemId},item=$.grep(fromItems,testFunc).pop(),filtered=$.grep(fromItems,testFunc,true)
 if(isDeselect)
-this.scopeValues[this.activeScopeName].active=filtered
+this.scopeValues[this.activeScopeName]=filtered
 else
-this.scopeValues[this.activeScopeName].available=filtered
+this.scopeAvailable[this.activeScopeName]=filtered
 if(item)
 toItems.push(item)
-this.toggleFilterButtons(items)
-this.updateScopeSetting(this.$activeScope,items.active.length)
+this.toggleFilterButtons(active)
+this.updateScopeSetting(this.$activeScope,isDeselect?filtered.length:active.length)
 this.isActiveScopeDirty=true
 this.focusSearch()}
-FilterWidget.prototype.displayPopover=function($scope){var self=this,scopeName=$scope.data('scope-name'),data=this.scopeValues[scopeName],isLoaded=true,container=false
+FilterWidget.prototype.displayPopover=function($scope){var self=this,scopeName=$scope.data('scope-name'),data=null,isLoaded=true,container=false
+if(typeof this.scopeAvailable[scopeName]!=="undefined"&&this.scopeAvailable[scopeName]){data=$.extend({},data,{available:this.scopeAvailable[scopeName],active:this.scopeValues[scopeName]})}
 var modalParent=$scope.parents('.modal-dialog')
 if(modalParent.length>0){container=modalParent[0]}
 if(!data){data={loading:true}
@@ -3181,8 +3183,7 @@ FilterWidget.prototype.fillOptions=function(scopeName,data){if(this.scopeValues[
 return
 if(!data.active)data.active=[]
 if(!data.available)data.available=[]
-this.scopeValues[scopeName]=data
-if(scopeName!=this.activeScopeName)
+this.scopeValues[scopeName]=data.active;this.scopeAvailable[scopeName]=data.available;if(scopeName!=this.activeScopeName)
 return
 var container=$('#controlFilterPopover .filter-items > ul').empty()
 this.addItemsToListElement(container,data.available)
@@ -3194,8 +3195,8 @@ if(!this.scopeValues[this.activeScopeName])
 return
 var
 self=this,filtered=[],items=this.scopeValues[scopeName]
-if(items.active.length){var activeIds=[]
-$.each(items.active,function(key,obj){activeIds.push(obj.id)})
+if(items.length){var activeIds=[]
+$.each(items,function(key,obj){activeIds.push(obj.id)})
 filtered=$.grep(available,function(item){return $.inArray(item.id,activeIds)===-1})}
 else{filtered=available}
 var container=$('#controlFilterPopover .filter-items > ul').empty()
@@ -3204,10 +3205,10 @@ FilterWidget.prototype.addItemsToListElement=function($ul,items){$.each(items,fu
 $ul.append(item)})}
 FilterWidget.prototype.toggleFilterButtons=function(data)
 {var items=$('#controlFilterPopover .filter-active-items > ul'),buttonContainer=$('#controlFilterPopover .filter-buttons')
-if(data){data.active.length>0?buttonContainer.show():buttonContainer.hide()}else{items.children().length>0?buttonContainer.show():buttonContainer.hide()}}
+if(data){data.length>0?buttonContainer.show():buttonContainer.hide()}else{items.children().length>0?buttonContainer.show():buttonContainer.hide()}}
 FilterWidget.prototype.pushOptions=function(scopeName){if(!this.isActiveScopeDirty||!this.options.updateHandler)
 return
-var self=this,data={scopeName:scopeName,options:this.scopeValues[scopeName]}
+var self=this,data={scopeName:scopeName,options:JSON.stringify(this.scopeValues[scopeName])}
 $.oc.stripeLoadIndicator.show()
 this.$el.request(this.options.updateHandler,{data:data}).always(function(){$.oc.stripeLoadIndicator.hide()}).done(function(){self.$el.find('[data-scope-name="'+scopeName+'"]').trigger('change.oc.filterScope')})}
 FilterWidget.prototype.checkboxToggle=function($el){var isChecked=$el.is(':checked'),$scope=$el.closest('.filter-scope'),scopeName=$scope.data('scope-name')
@@ -3224,6 +3225,7 @@ this.$el.request(this.options.updateHandler,{data:data}).always(function(){$.oc.
 $scope.toggleClass('active',!!switchValue)}
 FilterWidget.prototype.filterScope=function(isReset){var scopeName=this.$activeScope.data('scope-name')
 if(isReset){this.scopeValues[scopeName]=null
+this.scopeAvailable[scopeName]=null
 this.updateScopeSetting(this.$activeScope,0)}
 this.pushOptions(scopeName);this.isActiveScopeDirty=true;this.$activeScope.data('oc.popover').hide()}
 FilterWidget.prototype.getLang=function(name,defaultValue){if($.oc===undefined||$.oc.lang===undefined){return defaultValue}
diff --git a/modules/system/assets/ui/vendor/moment/locale/ar.js b/modules/system/assets/ui/vendor/moment/locale/ar.js
index e0d3c98f1..fed1c9cdc 100644
--- a/modules/system/assets/ui/vendor/moment/locale/ar.js
+++ b/modules/system/assets/ui/vendor/moment/locale/ar.js
@@ -1,4 +1,5 @@
 //! moment.js locale configuration v2.22.2
+//!!! IMPORTANT - modified from default - see https://github.com/octobercms/october/issues/5213
 
 ;(function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined'
@@ -9,27 +10,16 @@
 
 
     var symbolMap = {
-        '1': '١',
-        '2': '٢',
-        '3': '٣',
-        '4': '٤',
-        '5': '٥',
-        '6': '٦',
-        '7': '٧',
-        '8': '٨',
-        '9': '٩',
-        '0': '٠'
-    }, numberMap = {
-        '١': '1',
-        '٢': '2',
-        '٣': '3',
-        '٤': '4',
-        '٥': '5',
-        '٦': '6',
-        '٧': '7',
-        '٨': '8',
-        '٩': '9',
-        '٠': '0'
+        '1': '1',
+        '2': '2',
+        '3': '3',
+        '4': '4',
+        '5': '5',
+        '6': '6',
+        '7': '7',
+        '8': '8',
+        '9': '9',
+        '0': '0'
     }, pluralForm = function (n) {
         return n === 0 ? 0 : n === 1 ? 1 : n === 2 ? 2 : n % 100 >= 3 && n % 100 <= 10 ? 3 : n % 100 >= 11 ? 4 : 5;
     }, plurals = {
@@ -114,9 +104,7 @@
             yy : pluralize('y')
         },
         preparse: function (string) {
-            return string.replace(/[١٢٣٤٥٦٧٨٩٠]/g, function (match) {
-                return numberMap[match];
-            }).replace(/،/g, ',');
+            return string.replace(/،/g, ',');
         },
         postformat: function (string) {
             return string.replace(/\d/g, function (match) {