Hello Chrism, It is very common issue , please follow the below step issues will fixed without loss any bookmarks or data which is store in your browser '''1. Restart in Safe Mode:''' * Open Firefox. * Click the menu icon (three horizontal lines) in the upper-right corner. * Select "Help" > "Restart with Add-ons Disabled." * This will start Firefox in Safe Mode without any extensions. Check if the issue persists in Safe Mode. If it doesn't, an extension might be causing the problem. '''2.Check for Tab-Related Extensions:''' * If the issue seems to be related to tabs, consider checking your extensions for any that deal with tab management or icons. Disable or remove any such extensions and see if the problem is resolved. '''3.Refresh Firefox:''' * A Firefox Refresh can help fix many issues without losing your bookmarks and important data. It essentially creates a new profile while preserving your data. To refresh Firefox: * Click on the menu icon. * Select "Help" > "Troubleshooting Information." * Click on the "Refresh Firefox" button and follow the prompts. '''4. Backup Your Profile (Optional):''' * If you are concerned about losing data, you can create a backup of your Firefox profile. This involves copying your profile folder to another location. However, be cautious, as this process is more advanced and can have risks if done incorrectly. If you decide to proceed with this option, make sure you have a backup of your data: * Close Firefox. * Locate your Firefox profile folder (usually in the "AppData" folder on Windows or "Library" on macOS). The profile folder's name will have a random string of characters and end with ".default." * Copy this profile folder to a safe location, like an external drive. * After creating the backup, you can safely refresh or reset Firefox. If anything goes wrong, you can restore your profile from the backup. '''5.Reinstall Firefox:''' * If the issue remains unresolved, you can try reinstalling Firefox without removing your data: * Uninstall Firefox from your computer. * Download the latest version of Firefox from the official Mozilla website. * Install it. Thanks Regrads -Arman

Does it still happen in [[Diagnose Firefox issues using Troubleshoot Mode|Troubleshoot Mode]]?

Thanks so much!