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Random boxes appear when highlighting text

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  • Last reply by zeroknight

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Recently random boxes (black, grey or white) started appearing when highlighting text. The problem started occurring after the most recent Windows 11 update (2023-09 Cumulative Update Preview for Windows 11 Version 22H2 for x64-based Systems (KB5030310)).

Recently random boxes (black, grey or white) started appearing when highlighting text. The problem started occurring after the most recent Windows 11 update (2023-09 Cumulative Update Preview for Windows 11 Version 22H2 for x64-based Systems (KB5030310)).
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Check for malware

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Checked and clean. I only see the issue on FireFox. Chrome and Edge don't exhibit the same behaviour.

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Update your graphics drivers to the latest version from the manufacturer's site, failing that you may need to disable hardware acceleration.