I recognized, that many PWA do not work properly if iOS (iPadOS) Safari set to 75% scaling. It always zooms wierdly in, especially if a input field is tabbed. After a short research, I found this:
Does Voyager use this for it’s awesomeness, or is there a more clean way? And could please someone put that into nextcloud dashboard and all the *arrr apps? 😂 that‘d be nice
Absolutely! Voyager is the gold standard for PWA