I installed the previous mutter version (mutter_3.32.0-1_amd64) as suggested, and it works as expected. No more downscaled fonts after reboot.
The version that does not work is mutter_3.32.0-1ubuntu1_amd64
I installed the previous mutter version (mutter_ 3.32.0- 1_amd64) as suggested, and it works as expected. No more downscaled fonts after reboot.
The version that does not work is mutter_ 3.32.0- 1ubuntu1_ amd64