

Basically it appears system fonts have become problematic with InDesign. I actually don't think Suitcase has too much to do with this, because the problem occurred after the InDesign update, but it's our font management software so I'm including it. I have narrowed it down to InDesign 15.0.2, macOS Catalina 10.15.3, and Suitcase Fusion 21.0.0.
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Our publishing company recently ran the InDesign update (to 15.0.2) and have discovered some major font issues. I hope this issue can be fixed asap because it's font chaos over here! Thank you. I have included screen shots for reference. Other times it will open but them shut off a few seconds later.

Sometimes the file can't open the fonts at all and they start out and remain highlighted pink. Then when I go to export, the system fonts turn pink.

Sometimes the document will open ok and the fonts will appear fine. I even created some very simple type only files that are having system font issues as well. Packaged files are suddenly showing up with lots of the dreaded pink.
