Map Scroll Stops Working

Just noticed this bug in the middle of the game, when I open a character sheet in windowed mode and then close out of it, my scroll wheel stops working on the map. It will still work in character sheets, and opening a new windowed sheet doesn't fix it or anything like that.  I am running chrome on win10. I cleared my cache just before the game started so I can't imagine that this is where the issue originates. It isn't a mouse issue since the scroll wheel still works on all other pages

I've had this bug happen to me as well. I think Roll20 is losing focus on the map somehow and not recognizing the mouse being over the map when scrolling. Windows 10, Chrome as well.