I have same issue since a year or so. This is really annoying, as right ALT on my keyboard is used to enter national characters - so it is used heavily. In *some* places you loose what you just typed making it impossible to work.
I noticed it is really hard to tell where issue will appear; right now I have multiple tabs in Firefox 59.0.2 (64-bit) open. This "add comment" text area works fine. I have another webpage open in same firefox, where this occurs. I also confirm this behaviour in libre office writer's search textbox (4.2.8.2 Build ID: 420m0 Build:2). marcin -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1484157 Title: AltGr key acts like "Select All" To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/1484157/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs