Using AirDrop under iOS 17, my custom files open in the Files app instead of my app

Question

When attempting to AirDrop a file my app creates, extension .PTW, the receiving device does not open the file in my app, instead it saves it in the Files app, in the Download folder. Before iOS 17, it used to open directly in my app.

My UTI seems to be configured correctly as per https://developer.apple.com/documentation/uniformtypeidentifiers?language=objc .

I also tried configuring my info.plist file as per the answer at https://stackoverflow.com/a/45154660/1515515 . Same result.

Answer 1

That's an intentional change in iOS 17.

ref: https://developer.apple.com/forums/thread/737971?page=1#767265022