After opening Scene Draw mode menu, If scene window moved to a different position then the Scene Draw mode menu remains active in its original position. refer attached video.

Steps to Reproduce:
1. Create a New Project
2. Scene View > Scene Draw mode menu
3. Change the Scene Window position

Actual result:
Scene Draw mode menu remains active even if the Scene window moved aside

Expected result:
Scene Draw mode menu should collapse as soon as scene window moved to a different position

Occurring on:
2020.2.0a19, 2020.1.0f1, 2020.1.0a22

Working Fine on:
2020.1.0a21, 2019.4.6f1

Environment:
macOS 10.15