In iOS 14 a thumbnail for a USDZ or Reality file would appear in the native Messages App on the iPhone and iPad, the thumbnail was a preview of what the USDZ contained. In iOS 15 this thumbnail has been replaced with just an image of a white file with the name of the USDZ underneath.
I send previews of my products to customers through iMessage and it was proving very successful until iOS 15, but now I’m getting lots of reports that they won’t open up the file as it looks like malware.
I’ve attached two images of the your toy drummer (from your quick look gallery) in the Messages app and what it looks like in iOS 14 and iOS 15. Any thoughts on the matter would be greatly appreciated.