When submitting action=delete on commons.wikimedia.beta.wmflabs.org I get:
Cannot delete page "(pagename)..."
1
See attachment for screenshots.
Interestingly, when refreshing the page the deletion did succeed. But the page is very broken.
This could be a bug in 1.19-trunk, but since it's working locally I'm filing this under labs, nonetheless as a highest blocking bug. This cannot go live if this were to be a real bug.
Version: unspecified
Severity: blocker