Well, I found a solution using utils.decodeHTMLEntities for chars between dollars tags of KaTeX, before the markdown conversion. 🙂
I hope it's not too much insecure...
Thanks for your quick fix. There is still a bug with
/templates/partials/account/header.tpl. The condition for the CoverPhoto menu should join with a
isAdmin condition. Unfortunately I couldn't find out how to combine conditions.
<!-- IF isSelf OR isAdmin --> ... <!-- ENDIF isSelf OR isAdmin --> or similar doesn't work.