hello pfeifer_s, '''follow the instruction and steps:''' Try Firefox Safe Mode to see if the problem goes away.[[ Firefox Safe Mode]] is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes). '''If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:''' * Click the ≡ menu button top right browser screen * Click Help and select Restart with Add-ons Disabled. '''If Firefox is not running, you can start Firefox in Safe Mode as follows:''' * On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut. * On Mac: Hold the option key while starting Firefox. * On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode * (you may need to specify the Firefox installation path e.g. /usr/lib/firefox) If the issue is not present in Firefox Safe 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 Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again. When you figure out what's causing your issues, please let us know. It might help others with the same problem. i hope resolved your problem then reply back to me. Thank you!

This problem persists even in safe mode. Only the tag entry (in German: Schlagwort) is visible.