4.7.5 ECollisionChannel in trace functions does not work properly

Development Programming & Scripting
3

Hello, I am not stupid and used ECollisionChannel::ECC_WorldStatic with first function too. It just does not work.
Same with function in PlayerController that use this kind of input. For example:

bool APlayerController::GetHitResultAtScreenPosition(const FVector2D ScreenPosition, const TArray<TEnumAsByte<EObjectTypeQuery> > & ObjectTypes, bool bTraceComplex, FHitResult& HitResult) const

works. and

bool APlayerController::GetHitResultAtScreenPosition(const FVector2D ScreenPosition, const ECollisionChannel TraceChannel, bool bTraceComplex, FHitResult& HitResult) const

does not work properly. I get every possible hit result and not only WorldStatic.

So when I use:

TArray<TEnumAsByte<EObjectTypeQuery>> ObjectTypes;  
   ObjectTypes.Add(UEngineTypes::ConvertToObjectType(ECollisionChannel::ECC_WorldStatic));

GetHitResultAtScreenPosition(MousePosition, ObjectTypes, false,  HitResult);

everything is ok.

But when I use

GetHitResultAtScreenPosition(MousePosition, ECollisionChannel::ECC_WorldStatic, false,  HitResult)

this will not work