the forward and backward keys are locked
When viewing websites, the forward and backward keys are locked preventing movement
When viewing websites, the forward and backward keys are locked preventing movement
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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
A possible cause is a problem with the file places.sqlite that stores the bookmarks and the history.