Thanks @maciejewson - indeed it is. Notifications were already blocked and I can't seem to find any setting for tips in settings on Windows (would be grateful if you could give me the steps). The only way out was to switch off smart tabs altogether ...
This is the most annoying new feature in version 149.0 64 bit on windows 10 pro. It is really irritating to receive a message every time I start firefox that won't disappear unless OK is clicked or the ESC button is pressed. Just as annoying is the...