10.15.1 PhotosUI extensionContext.project.projectExtensionData is empty

This is new to Catalina 10.15.1 update. When re-loading a project using PhotosUI api:


resumeProject(with extensionContext: PHProjectExtensionContext, completion: @escaping (Error?) -> Void) { }


extensionContext.project.projectExtensionData is empty!


New projects create fine, however they cannot be reopened because the data is empty. All projects are affected. This is really, really bad news for users trying to create projects.


The identical code works fine on 10.13.*, 10.14.*, and 10.15.0


I have submitted a bug. Is there a work around to tech note somewhere?