I got exactly the same message that could not be cleared. I tried to file a bug but somehow the bug reporter erroneously detected, that I was wanting a support request and stopped me. I did ask a similar question as you about it in this question and answer, earlier this month. I also put a link to a video on youtube of exactly what I was doing that led up to it. It might be of use for comparison. Here is the address to that video:
https://www.youtube.com/watch?v=onX1UP89UJI&t=331s