RenderThumbnail leads to FPhysScene crash??

Development Programming & Scripting UI
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6

Ok, I have got a solution but not the best solution.
what lead to crash is when you create a FThumbnailPreviewScene, you actually create a new UWorld with no PhysicsScene.

So the physicsscene is NULL, and many code about physicsscene will lead to a crash.

What I do it just fix this line in ThumbnailHelpers.cpp:

FThumbnailPreviewScene::FThumbnailPreviewScene()
	: FPreviewScene( ConstructionValues()
						.SetLightRotation( FRotator(304.736, 39.84, 0) )
						.SetCreatePhysicsScene(true) //set it to true
						.SetTransactional(false))