I use TextSoap for a lot of cleanup actions. I was running it two weeks ago after upgrading to Big Sur and I saw this in my dock and was convinced it was a bug.

CleanShot 2021 04 15 at 21 08 17 2x

I looked in my logs and captured the steps I was doing to reproduce it. I figured the next day I would contact the developer. Then the next day it was gone and I did not think much about it. Today I went back and look at the screenshot I captured to see if there was any other information I could pass on.

Created: April 1, 2021 at 10:55 AM

Good one!