Traps bug in a new map

Summary

Every time I restart the UEFN session some traps disappear for no reason, I always save everything before closing but it doesn’t help, what should I do?

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Devices

Steps to Reproduce

I started a new map 3 days ago

Expected Result

Don’t must be bugged

Observed Result

Must be normal

Platform(s)

Pc, ps5