Ref T13513. Currently, if you're editing a comment, "delete" doesn't put the comment into the correct state. This action is normally only reachable from comment previews, since an editing inline has no "delete" button.
- Started editing an inline, clicked "Delete", got a deletion.
- Created an inline, typed text,
- Deleted a normal comment via preview.
- Deleted a normal comment via the on-inline action.