In Firefox, the extension can't open an "about:newtab" window and will crash when this is requested. Same goes for "about:home". It might have to do with Firefox security policies, however, the extension shouldn't crash when this happens. Ideally, there'd be a way to open this kind of tab, but I'll understand if that's not possible because of Firefox policies.
Enabling and disabling the extension on the about:addons page restarts the extension and fixes the crash (until the next accidental nonexistent page close, ofc).
In Firefox, the extension can't open an "about:newtab" window and will crash when this is requested. Same goes for "about:home". It might have to do with Firefox security policies, however, the extension shouldn't crash when this happens. Ideally, there'd be a way to open this kind of tab, but I'll understand if that's not possible because of Firefox policies.
Enabling and disabling the extension on the about:addons page restarts the extension and fixes the crash (until the next accidental nonexistent page close, ofc).