duplicate History Local breaks the display

Erroneously on prod, I saved /xwiki/bin/view/FW_masterFramework/History%20Local

The result? I can't edit it or save "History Local" or "History Local "... they all give me the error: Wrapped Exception: a different object with the same identifier value was already associated with the session: com.xpn.xwiki.objects.StringProperty

This breaks the info-display of any resource with that subject item.

This breaks the display (and search result and...) of any resource that has that subject item as first.