I’m having a widget bug in 4.20.2. It seems to be a regression from 4.19, and I cannot reproduce it using a small project, so I’m posting it here: Alignment of custom widget blueprints within custom widget blueprints is often broken on Linux (as well as on Android). All is fine on Windows and in the editor preview, but Linux/Android align some widget menus completely false.
I’ve spent several hours trying to find out which specific alignment/whatever is causing this bug, but this is a very tedious task, as it takes forever to deploy on Linux or Android from a Windows dev PC. Invalidating etc. the widgets does not seem to help.
So basically, complex widget combinations are broken on Linux and Android.
But I have found a workaround: Add widget to viewport, remove from viewport, add to viewport again:
Afterwards widgets are properly aligned on Linux.