First attempt to move a display moves whole window instead

In GitLab by @seijikun on Feb 20, 2021, 23:33

When I open KDisplay and try to move one of my 2 displays, klick-dragging moves the whole window instead of the display.
When I release the mouse button, and try again, it works.

[kdisplay_move_screen.mkv](https://my-gitlab-bucket.s3.amazonaws.com/759770623/a7bca935a6b6fb7ad7ca2c7aa38f40232a3b0849cb536ae9adb092e33d9ef460/kdisplay_move_screen.mkv)