Can't set owner to client's player controller for RPCs

Development Programming & Scripting
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1

Hello,

I have an actor I created in the editor and it loads on clients and on the server. I need to call server RPCs on this actor from the clients so obviously it needs a connection to the player.

In the client:

void ALmdaTileGrid::BeginPlay()
{
	Super::BeginPlay();

	if (!HasAuthority()) {
		ALmdaPlayerController* pc = Cast<ALmdaPlayerController>(GetWorld()->GetFirstPlayerController());
		ensure(pc);
		if (pc) {
			SetOwner(pc);
			pc->ServerTakeOwnershipOfGrid(this);
		}
	}
}

So I’m getting the local player controller on the clients, which definitely exists and is replicated by now.

On the server:

void ALmdaPlayerController::ServerTakeOwnershipOfGrid_Implementation(ALmdaTileGrid* grid)
{
  grid->SetOwner(this);
  TRACE("Reparented tile grid [%s] to [%s]", *grid->GetName(), *grid->GetOwner()->GetPathName());
}

This correctly shows the owners for the clients as being their player controllers.

The problem is this, on the client:

void ALmdaTileGrid::OnRep_Owner()
{
	Super::OnRep_Owner();

	if (GetOwner()) {
	    // Always null on ONE client. The other client works fine.
	}
}

I’m completely stuck so absolutely any help will be priceless.

Thanks