Read the statement by Michael Teeuw here.
UNSOLVED Wrong size of window (part of screen covered by black something)
Can anybody point me what can be wrong?
After one of update the right size of screen is invisible - like something is on top of MM hiding everything under.
I made fresh installation - same thing.
Everything is Ok with console but after MM starts - there is problem with right part.
Changed the background for orange but on the right you see mouse pointer changed to cross.
I finally found the solution on the other place -
chromium-browser --window-size=7000,7000 --start-fullscreen
If the monitor is smaller than 7000px, the system will detect the height and width.
where do you have this code placed?