(I submitted this previously but the ticket was marked "Not reproduceable" and it seems to be stuck there, even though I added additional information).

When I hit the "timeline" button, the timeline window doesn't open.
The only way to get the timeline window to open is to go to workspace->animation.

This problem still exists with version 8.21.1515.1 on Windows.

The problem appears to be related to my monitor configuration. I have three monitors which are positioned in what I suspect is a fairly unique arrangement: 2 monitors "stacked" vertically and a third to the right and centered (vertically) between the other two (see attachment). With this arrangement, getting the timeline window and a number of other panels to appear is problematic. Tooltips when hovering over a button show up on a completely different monitor. Moving panel around the screen doesn't work correctly (see attached video). Basically, all kinds of strange behavior.

If I unplug the 3rd monitor (the one to the right), I don't have any problems opening the timeline window. Pretty much all the problems go away. Unfortunately, I make extensive use of all three monitors when I'm working and it goes without saying that I don't have these issues with other programs like Unreal and Unity.

Please let me know if you need any additional information in order to reproduce the problem.

Thank you.