I have an application in development that tracks service tickets wherein a subpage to view a ticket's details now goes completely blank, but all previously visible buttons still exist and function without being visible. The subpages and pop-ups that those buttons redirect or produce also create blank versions of those subpages and pop-ups. What could've been changed that would cause this behavior? Is there some kind of "hide all regions on page" setting that was mistakenly bumped on?