we have an issue lately with posts and user-selected languages. Very rarely post-links (edit/delete/report/quote) have a different language then users default (or forum-default). This doesn't affect the whole page, just one post per page (at least we havn't spotted more so far). Screen: users language in this case is set to german while 2nd post shows english links while time is still german. Happens the other way too with all languages installed (5). A page-reload solves the issue every time. Tried several caching settings (XF/php/nginx) including disableing everything that smells like caching but no luck so far, users are still reporting it. Any idea whats going wrong here or what might affect/cause that issue?