[227k_14/227k_13] Crash with structs in any/map var

[pukabintu]

Critical: UStruct::CleanupDestroyed
Critical: (Struct SCL.SCLData.Item)
Critical: UStruct::CleanupDestroyed
Critical: (Class SCL.PlayerMenu)
Critical: UObject::StaticCleanupDestroyed
Critical: ULevel::CleanupDestroyed
Critical: ULevel::Tick
Critical: (Level NyLeve.MyLevel NetMode=NM_Client)
Critical: TickLevel
Critical: UGameEngine::Tick
Critical: UpdateWorld
Critical: MainLoop
Critical: (ClientCam Pos=(-6745.96,4533.7,-440.473) Rot=(77,-122,-1))

I have a class with a map var of structs being accessed continuously.
The game crashes seemingly at random, after a minute or so.
In 227k_12 there was no instability with this.