looks like a bug in android 12: bottom messaging box does not appear when exiting a chat room and entering again

[dovh]

Hi,
I setup a new android chat app using firebase dataset, following the video tutorial and docs.
The chat app works fine. I can create a chat room and write messages to it, but when I exist the room and enter it again the bottom messaging edit box does not appear and I can not write messages.

The bug does not appear in the demo.
As far as I know, I did not made any modification.
It works on android 10.0 and 11.0 but fails in 12.0

Thanks