I have just installed Firefox as well and tested it there using my personal Computer and my Agent Account in Zammad, still no User Information Pop-Ups there.
I have never installed any Add-Ons, Extentions or Plug-Ins by myselfe in any Browser since I’m using this Computer.
I checked the Developer Console and matched the Error-Messages there agains the Error-Messages shown in the very same Ticket for another Agent, a coworker.
I have two messages there, that my coworker does not have.
They are the following two messages:
(3) Images must have alternative text: Element has no title attribute (Error)
and
(1) Deprecated feature used (Warning)
Sadly I can’t attach or upload Screenshots here.
Is there yet another console I can check? If so, can you tell me where and what to check for?