The function enumerateValues on MPMediaEntity is crashing internally when a data item is missing. It appears to be accessing a 0 address inside swift_getObjectType. Anybody else seen this?

A document-based app that's been running fine on iPad and Mac Catalyst has stopped working on the Mac as of Sequoia 15.3. After the user selects a document to open, my app never gets called back from Apple's framework. (The app works fine on iPadOS.) Anybody else see this? I filed a feedback, FB16506048, several weeks ago but have had no reply.