Cannot Shift+Tab to put focus on previous inspector field on Linux

Unity Engine
1

I cannot Shift+Tab to put focus on previous inspector field on Linux.

The issue was in 2019.4.15f1 and in 2020.2.2f1.

2

This is still an issue in 2021.1.X and has been for a very long time. I filed an issue, but was told that the developers could not reproduce it and that my distro was not among the list of officially supported distros. Have you tried reporting a bug yourself?