copier/coller hs avec la souris mais ok au clavier / copy/paste hs with mouse but ok with keyboard

[eD1]

depuis quelques temps le copier/coller avec la souris (clic droit) est non fonctionnel de manière aléatoire, mais il fonctionne au clavier sous PC_W10

for some time now, copy/paste with the mouse (right-click) has been randomly non-functional, but it works with the keyboard under PC_W10.

[Agentvirtuel]

Hello

Illustration
https://connect.mozilla.org/t5/discussions/outlook-com-right-click-paste-and-copy-not-available/m-p/...
If you would like to test dom.event.contextmenu.enabled
I've tested false and it works

[eD1]

Thanks for your reply
Have you noticed that the problem is random:
- sometimes right-click copy works
- sometimes right-click copy is grayed out (non-functional) if I restart firefox 123.0.1 then the problem is temporarily solved...
I don't want to use the keyboard as a solution.