Firefox version 76.0 and 76.0.1 and 77.0 and 77.0.1 won’t let me to copy

[Gt-truth]

Firefox version 76.0 and 76.0.1 and 77.0 and 77.0.1 won’t let me to copy and paste in some cases ! any idea what may cause this ?

Edited June 5, 2020 by Gt-truth

[Hardhead]

2 hours ago, Gt-truth said:

Firefox version 76.0 and 76.0.1 and 77.0 and 77.0.1 won’t let me to copy and paste in some cases ! any idea what may cause this ?

That's a good one @Gt-truth. Have you tried disabling your extensions and see if there is an issue with one of your extensions?

I haven't ran into any issues like that on Windows 10 Pro.

[AdvancedSetup]

I am not having any issue and I use Firefox on multiple systems. Please try restarting your computer an see if it's still an issue.