I found a major bug with bug with UE5 and narrowed it to this. I made a custom C++ actorcomponent, and set PrimaryComponentTick.bCanEverTick to false in ctor. In BeginPlay, I read bCanEverTick and print to screen. In UE4, the value is correctly set, but in UE5, it is not. When PIE
UTestActorComponent::UTestActorComponent()
{
PrimaryComponentTick.bCanEverTick = false;
}
void UTestActorComponent::BeginPlay()
{
Super::BeginPlay();
if (PrimaryComponentTick.bCanEverTick)
GEngine->AddOnScreenDebugMessage (-1, 15.0f, FColor::Green, TEXT ("bCanEverTick"));
else
GEngine->AddOnScreenDebugMessage (-1, 15.0f, FColor::Red, TEXT ("No bCanEverTick"));
}
Repro is here. Tested on UE4.27 and UE5.2.1
https://filedn.com/l3TGy7Y83c247u0RDYa9fkp/temp/ue4/TestActorComp.zip