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When a site has updates it has a nice icon and indicator that how many updates are waiting and when we hover with cursor we got more info. But that keeping that popup open is a bit tricky. :) When the popup is open you have to move your cursor up/down and then you have to go to the update link. If you move your cursor diagonally the popup will close and you have to hover to the icon again.
Years ago I read a great article about how Amazon tackled the same problem and it was a great read. I digged and found it. Here it is: https://bjk5.com/post/44698559168/breaking-down-amazons-mega-dropdown
Dear Hub devs, please help us with this little nuisance. ;)
Cheers