This is probably a problem with profiles. I rebuilt the project without profiles, and it started working.
Pop-Up issue
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When i try to open a popup it not opens like it should.
As an example you can use:
https://moodle.ib-hochschule-online.de/ibfiles/technik/popup.html
Screenshot of code is attached.

Greetings from Germany
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What exactly is needed? A pop-up window can be opened as a tab.
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@A-Former-User said in Pop-Up issue:
What exactly is needed? A pop-up window can be opened as a tab.
I allow popups, go to the linked page from first post and it wont open a popup.
Looks like a bug in BAS i think.
Greetings from Germany