We are having a problem that has apparently been an issue for a while on all of our SP 2013 sites. Any dialog marked with
IsDlg=1 shows no content at all whatsoever. Meaning a thin white dialog is displayed. No content. No nothing. If I inspect the
iframe using dev tools and remove the
IsDlg=1, the full page displays in the dialog (ribbon and all).
Clearly a masterpage or some CSS has been messed with at some point in time but I cannot figure it out. I have tried resetting all masterpages but this has had no impact. If someone would have suggestions as to what I should be looking at, I would be very thankful.
EDIT: Some additional info that is important. The content isn't even rendering. It's not that the HTML is being hidden. If I inspect the content, this is quite literally all there is
From the ULS
Error=Cannot make a cache safe URL for "styles/dlgframe.css",