My code doesn't use any 3rd- party frameworks, only simple Model with some Int, Date and String. The problem was with the enum property. It looks like SwiftData bug - it used NSKeyedUnarchiveFromData to transcribe the enum kind property.

Using preview on my iPhone doesn’t help. My iPhone is crashing and restarting every few minutes, it’s really unusable. I hope there is fix coming sooner that beta 5.

I just wonder why did you release it if you knew that it’s not possible to use it.