[Bug]Paper 2D Tile Map Component's Tile Map Asset Property won't save

[Henry_Read]

Paper 2D Tile Map Component’s Tile Map Asset Property won’t save with Map Level when Paper 2D Tile Map Component in a Blueprint Actor Class or C++ Actor Class other than PaperTileMapActor. When I close the UE4 Editor, and reopen the level that just saved, the tile map asset property becoms non-exist asset. The tile map is gone and becoms black.

I found that PaperTileMapActor has a function

 #if WITH_EDITOR
 bool APaperTileMapActor::GetReferencedContentObjects(TArray<UObject*>& Objects) const
 {
     Super::GetReferencedContentObjects(Objects);
 
     if (const UObject* Asset = RenderComponent->AdditionalStatObject())
     {
         Objects.Add(const_cast<UObject*>(Asset));
     }
     return true;
 }
 #endif

RenderComponent is UPaperTileMapComponent.

Is it design decision or a defect that has not been fixed yet?
It is almost impossible to use PaperTileMapComponent in a Blueprint Actor Class since the Tile Map Asset Property will not save in a Map Level.
In C++ Actor class, it is not big problem. Simply add function GetReferencedContentObjects like APaperTileMapActor class will fixes the saving problem.

[Henry_Read]

It is found in Unreal Engine 4.8 release version.

[anonymous_user_d75c3bf6]

Still an issue in 4.15

[Michael_Noland]

Heya,

Do you guys have an AnswerHub or UDN thread on this? I haven’t seen a bug about this come thru, and GetReferencedContentObjects doesn’t do what you think it does. It’s just used to implement Ctrl+B and similar functions that let you browse from a placed actor to the asset in the content browser; it has no impact on whether something is saved or not. For Blueprint actor instances, we always make Ctrl+B go to the Blueprint asset anyways.

Cheers,
Michael Noland