User blog comment:BertH/Technical Update: March 2, 2016/@comment-5275700-20160303014235/@comment-452-20160303162845

Apparently the reason I wasn't able to reproduce the issue was because I was hovering too soon.

So, when I hovered immediately: nothing happened.

But, when I waited a few seconds, then hovered, before the page had finished loading, I was able to reproduce it:

So when testing the bug, please keep in mind that the window for failure doesn't start immediately.

Hilariously, while saving this screenshot, I found the last screenshot I took back when I first reported the issue: "loading notifications forever.PNG", apparently I didn't upload to CC, perhaps I just submitted it to special:contact - unfortunately the filenames are not preserved on the "Wikia Help Center" site, so a search for that filename yielded nothing.

edit: apparently even searching for the converted filenames doesn't work, because "phpqkohfI.png" also yields nothing