I only have one repo in my watch list, which is the one I am legitimately working on (a UE4 fork owned by my colleague, of which I have full access). The notifications tab is completely empty.
I have also received notifications by e-mail about, and apparently been granted push access to, 20-30 others in the last few days, none of which appear anywhere in my profile or settings.
I turned off “automatically watch” anyway (btw, there is no “bell” icon on my Github dashboard) but this feels like a different problem.