I've reached out to our WWDC contact to see if there's any possibility to revert this server-side change to the list from before June 7. We're calling font loading code on initialize so this issue results in a crash-on-launch for products using our SDK that have been using the downloadable fonts feature in the past. To repeat: This is a regression Apple introduced server-side onto existing, working code. This should be reverted.

afaik that's simply not possible in the Mac App Store. You can make the user open a directory and then store the file bookmark there to keep permission. Pre-shipping with this permission is not allowed.