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While typing in an email, I can not delete or backspace a single letter. When I delete one letter, the whole line disappear.
While typing in an email, I can not delete or backspace a single letter. When I delete one letter, the whole line disappear. I am using Window 7 and latest Firefox.
Every time Firefox opened
== Using Firefox on my new machine with Window 7.
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Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems
If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. You can use "Disable all add-ons" on the Troubleshoot Firefox issues using Safe Mode start window to disable all extensions. You have to close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")