This just started today. Everything was working fine before. Reinstalled no change. Installed 2.83 beta. No change. Rebooted to Ubuntu no problem there. Any ideas? The material I link to below shows my problem.
Ok I know the problem. I had this before. Deselect evrything in the edit mode then go back to object mode. To deselect click to an empty place or press A 2 times fastly.
I don't know what is this problem about but you need to deselect everything in edit mode before going back to object mode.
After I updated my graphics card driver it is not a problem for me anymore.