My brightness is reset to max every time I reboot my machine, and at each reboot the keyboard indicator is not well displayed it appears like little dots on notification area
And only after clicking on Alt+Shift to change keyboard layout, then the letters are displayed correctly
Both the brightness and keyboard indicator were working perfectly after clean install of Ubuntu Mate 19.10 Beta, but now after several automatic updates they are broken.
[Edit] In fact the problem with keyboard indicator appears only after I choose non default layout then shutting down, after rebooting I see those little dots on the panel instead of the previously non default keyboard layout letters.