In version 11.0-Beta4, when trying to open the system tray, it always opens in the top left corner (of the primary monitor), regardless of where it was clicked (second or thrid monitor), and the arrow that opens it stays highlighted.
This intermittently happened in the past but it always fixed itself after a couple more clicks so it wasn't that annoying.
But now nothing seems to fix it.

Looks like installing this version permanently broke something, I have rolled back to Beta3 and it's now happening with this one too.
I am 100% sure that it was DF that did this, I haven't touched anything else and this started right after updating to Beta4.

I just restarted DF (still Beta3) and now clicking on the system tray arrow makes the tray flash in the top left corner for a second then moves it to the correct position.

Sure, here it is.

Attached.
Since I cannot use this version I just now realized that the start menu is bugged as well, it also opens on the primary monitor every time.

Thanks! Let me know if I can provide anything else for the investigation.