What if the first press of the delete key deletes all unlocked elements and leaves the locked elements selected? Then the UI message could show up with the cursor saying something like "Press delete again to remove locked elements". That might hit all objectives for this bug report.
What if the first press of the delete key deletes all unlocked elements and leaves the locked elements selected? Then the UI message could show up with the cursor saying something like "Press delete again to remove locked elements". That might hit all objectives for this bug report.