I’m using Firefox Quantum and finding that when I try to move a task, the cursor does not ‘pick up’ the task even though it has turned into a ‘hand’. Then, if i move my mouse or scroll, there is a pop up window that appears and stays static on the page even while the content is scrolling underneath it. the popup window does not disappear even if i adjust the panes, turning them on and off. i also have tried reloading the page, and the issue is somewhat consistent. earlier today, i moved 44 tasks at once from one place on a list into another section on the same list. please advise.?