Hi, sorry you are having this issue. nightTab 6.6.0 was last updated on May 24, 2021. My tests show nightTab is still working as expected with the latest version of Firefox.


I'm not sure what might be causing this issue for you, have you installed anything new which could be interfering nightTab?

Edit
Can you create an new ticket here please: https://github.com/zombieFox/nightTab/issues

Please provide step to recreate the issue as well as your OS, browser, extensions installed and version numbers. Sharing your nightTab backup JSON will also help me understand what might be causing this issue. I'll do my best to investigate.