It can be similar to [/questions/1399560], [/questions/1399667]. '''Try Firefox Troubleshoot Mode''' to see if the problem goes away. Firefox Troubleshoot Mode is a special diagnostic mode that temporarily turns off hardware acceleration, disables add-ons (extensions and themes) and resets some settings. See the [[Diagnose Firefox issues using Troubleshoot Mode]] article for details. * On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' <br>(you may need to specify the Firefox installation path e.g. /usr/lib/firefox) When the Firefox Troubleshoot Mode window appears, select "Open". ;[[Image:Fx88TroubleshootMode]] '''''If the issue is not present in Firefox Troubleshoot Mode''''', your problem is probably caused by an extension, theme or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause. ''To exit Firefox Troubleshoot Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again. (If you can't exit Firefox Troubleshoot Mode, please see [[Firefox is stuck in Troubleshoot Mode]]).'' When you figure out what's causing your issues, please let us know. It might help others with the same problem.