Laptop came with Windows 10 and Firefox installed. Even after Windows and Firefox update the problem still exixts. Don't have the same problem with Edge and Opera. I have even removed Firefox and downloaded and reinstalled from the Mozilla website. Can't determine if it's an Acer or Firefox issue. Display driver appears to be up to date. I also have an old Dell laptop I upgraded to Windows 10 with Firefox that doesn't have this problem.
Any help would be appreciated.