Couldn't update or delete Layer State

Somehow I created two Layer States that I couldn’t update (but panel acted as I did) nor delete. After reopening the file, they disappeared - so it’s rather a minor bug but enough to say wtf a couple of times and to report.

They might be something interfering with Named Positions… I ran into it once again but I can investigate it deeply right now.

Rhino 6.20.19310.3081