I've got 2 screens set up vertically, primary screen on top, secondary on bottom.

1) open several windows on the 2ndary screen
2) go to overview mode
3) try to drag the the windows from the bottom 2ndary screen to the primary one

Observed result:
When going from top to bottom in window drag and drop mode, the cursor passes inside the bottom area of the primary screen triggering the "switch to next desktop" action, which makes it hard to move a window from the 2ndary screen to the currently displayed desktop on the primary screen. When trying to quickly move several windows from bottom screen to bottom, one new desktop is created for these windows

Expected result:
The desktop switching doesn't occur while I'm trying to move these windows.