Here's what I found: The problem seems to be interference / competition between firefox's auto-complete (or it could be google's autocomplete, I'm not sure which service does this) and the firefox spell-checker. When I turn off spell-checking in the subject box when the problem occurs, the auto- complete shows and all is well. If there is no auto-complete (ie. I have not typed text start with the same word(s) previously), there is no problem.
To test this: Try is with a gmail subject box. Make sure auto-complete is on, as well as spell-checking. Type something you never typed before. Like '6tiksmkd'. No problem. Type something like 'Japan Tsunami" (or whatever you entered before) and the problem occurs. No right-click in the subject box and turn off spell-checking. The problem goes away. Can others confirm if the same happens with them? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/583122 Title: firefox occasionally highlights contents of form fields while typing thereby overwriting previously entered keystrokes -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
