That's when Premiere pro stops working normally!!! Check it

[BulatMasterR]

Just watch the video. I cut out a part of the clip, copied it, and nested it. After that, the top menu, which is intended for changing the workspace, stops working.

In addition, if you collapse the program in the Windows 10 control panel, and expand it back, then white rectangles may appear in the corners of the program and windows may get confused.

[Peru Bob · Accepted solution]

See Ann's reply here:

https://community.adobe.com/t5/premiere-pro/pannels-freezing-with-nested-sequences/m-p/12081583#M349...:

[BulatMasterR]

Thank you!

[Peru Bob]

You're welcome.