App switcher stops working randomly after A12 update

[OldRoutard]

This problem is extensively discussed in the following topic:

Update to Android 12 broke Switch App Button (Square)

Hi there, since I did the system update to Android 12, there are several issues with my phone… Despite the fact, that Android 12 ist incredibly ugly and the UI absolutely chaotic, it broke a lot of my settings. E.g. the text size is messed up and it randomly shows a Podcast Episode from Spotify I watched a few days ago on the Status Screen. But the main problem is, that the Square Button stopped working. It is completely unresponsive and I can’t close running apps anymore. Someone having the…

The problem appears to be related to the choice of launcher and is seen with other ROMs.