Bookmark 2 sequential lines (line 1 and line 2) (Ctrl+F2)
Delete the first line - there will be 1 bookmark remaining
Press Ctrl+F2 to remove the remaining bookmark - you have to press it twice
It's as though the 2 bookmarks are being merged into one, so you have to Ctrl+F2 twice to remove it
That is precisely what is happening - there are two bookmarks on the line now.
This is a bug.
Fix committed as [c215c2].
Related
Commit: [c215c2]