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

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.

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.