Credit to @fansaien.
Reference: https://github.com/octobercms/october/pull/3793. This commit added the e() function for translation results.
Because the filter is using the mustache template, and the manual said: All variables are HTML escaped by default. If you want to return unescaped HTML, use the triple mustache: {{{name}}} (https://mustache.github.io/mustache.5.html)
That means the string will be escaped twice. So, I removed the e().