Good idea. This issue was resolved with 11.0.3 release but a drag and drop before then, when the bug was active, might possibly be the cause of these results.
@nkess , yes another drag and drop would resolve it if that was the cause. But drag and drop can result in things getting lost, so it would be my last choice. This is an old post that attempted to catalogue what gets lost and what gets preserved with Drag n Drop from back in RM10 days.