Hi again Matt, I can see this error when trying to writeDatagram just after wake from sleep... Failed to write data to udpSession. Error: The operation couldn’t be completed. No buffer space available, (code=55) Best regards / Jorgen

I was looking at some other questions for #wwdc21-10017 and found that quakes.reduce(0, { $0 + $1.count }) solves my problem. Great! Now onwards to figure out how to handle the selection in a @SectionedFetchRequest List building on the Quakes sample. Any ideas are welcome. Thx!

Hi again, As I didn't get any ideas here on how to solve this problem I decided to reach out to Apple Technical Support and ask the Apple devs. This is the baffling answer I got. "Thank you for contacting Apple Developer Technical Support (DTS). We have reviewed your request and have concluded that there is no supported way to achieve the desired functionality given the currently shipping system configurations." Wow! Need to file a request for this. Seems odd that you can't do this in 2021.

Yes, I can confirm that the issue still exists in Version 26.0 beta 6 (17A5305f) and the iOS 26 SDK beta 6 (23A5324a) in the simulator. Can't understand why it's not fixed :-( Filed a bug (FB19756493)