Hi gb sincerest apologies about that bug. Can you give me more details? I'm trying to replicat this issue with no success so far. Some additional information about your OS and which settings in particular is causing the issue for you would be a great help. Also happy to help via email reblws[at]protonmail.com or github https://github.com/reblws/tab-search/issues

I'd also triple check to make sure any permissions being asked are accepted. The extension requires some basic storage permissions to save the settings.