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Since few days I experienced a strange beaviour on my firefox: if I press and keep pressed a key, say backspace or left arrow or just a letter key, then usually I see repetitions, e.g. fast erasing back, fast moving back and forward or just typing something like: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa In my gmail composer this does not happens anymore, and if I need to erase a word I need to repetitely press and relase backspace key. I erased firefox and make a fresh install, via snap, with completely new profile, but the problem remains. It does not seem to appear on other places, for instance when typing this question everything is fine. If I use gmail with other browser (same pc) then all is fine. I have ubuntu with all updates regurarly installed, uname -a give me Linux mypc 5.15.0-101-generic #111-Ubuntu SMP Tue Mar 5 20:16:58 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux How can I fix this? Where I have to look?