Weird delete behavior in list

I don’t know how this bug came about. It may be that a document is corrupted, and that I can copy and paste the corruption between documents.

I made the attached document by copying part of a document that I am working on, which shows this bug, and then editing the document to get it to the smallest set that still shows the bug.

To see the bug, put the cursor after the space between the “A” and the “a” in either paragraph and hit the Delete key. Instead of deleting the space to the left of the cursor, the entire sentence will be deleted.

Scrivener 3.2.2. MacOS 11.2.3.