Editor Break When SET Struct (LinearColor Only) (Before 60 Seconds)

Hi, i have a problem only when i Set Struct type FLinearColor using this code…

*StructProperty->ContainerPtrToValuePtr(ContainerPtr) = HUDProperty.PropertyValue.Value_LinearColor;

But changes happen in the editor normally but the break editor after a 40 seconds alone (standbye) …

Why?

FRotator and FVector no Happyness…