Just a quick update here as well.
We found another thread with a very similar error: https://developer.apple.com/forums/thread/792230?answerId=848156022#848156022
That helped us shift our focus during the analysis, and we eventually identified the root cause. We use ixGuard from GuardSquare to obfuscate parts of our SDK, and that was what triggered the issue. After updating to a newer version of ixGuard, the problem was resolved.
Topic:
App & System Services
SubTopic:
iCloud & Data
Tags: