Greetinx...
I have the same problems.
Also with the start menu, that does what it like to.
I thaught it would be something with my screen-adjusting.
Nice to hear it is not so.
In addition my systemtray-tab did so,too.
After choosing several options it now stopped this behaviour. I do not know why. I think it has mainly to do with the Hotspots.
My systemtray-tab is placed on the right side of the screen and opened together with the left placed tab when I touched the left (!) screen. It dissapeared very quickly, but the left tab, too.
I now use only the Hotspot on the lower middle (taskbar-tab), before I used some more, that to the left and that to the right lower corner.
I can only avoid to open up both (upper+lower) with different times to open up, so that I can be fast enough to move the pointer back from the upper edge of the screen. Then, the lower won't appear.
I only have static tabs on the desktop-level, all other levels are drawers. Only the
taskbar-tab is also on the desktop as a "mouse over action". And so it appears also when I move the pointer to the upper screen.
I hope something is useful?!
Thomas