We've reproduced this at our organization as well with a few devices, the common theme appears to be skipping over iOS 16 (either via restoring from backup from iOS 16, or directly upgrading the device from iOS 16 -> iOS 18. Created FB15442633 with screenshots/sysdiagnose.

@O_G Did you ever find a solution for this issue? We're experience something almost identical with the latest release of our app.

I work for the same organization as @aotondo. Submitted FB9818519 with attached simctl diagnose logs.