Unreal Engine Issues

Absolute World Position post process no longer works in mobile preview

User reports this work correctly in 4.24, but now no longer works as expected in 4.25.I don't have a clear CL just yet, marking unconfirmed. If you change the settings to use ES3.1 Preview and just ...

Child actors cannot be recognized as children of parent actor within parent blueprint

Parent blueprints do not recognize child class actors as the same type as the initial parent blueprint. This makes it difficult to create a master blueprint for spawning/ai control/etc. ...

Previewing Nav Mesh in DX12 Mode causes Editor to Crash

In UE4.11p6, previewing Nav Mesh in DX12 Mode causes Editor to crash. ...

Collision Not Working on Dynamically Spawned Objects While Using 'Cook Blueprint Component Data for Faster Instancing at Runtime'

Dynamically spawned objects' collision does not seem to be working in a packaged game when the Cook Blueprint Component Data for Faster Instancing at Runtime option is enabled. Found in 4.14.1. Un ...

'Wait for Movies to Complete' flag is Reversed in Packaged and Standalone Game

The 'Wait for Movies to Complete' flag has had its behavior reversed. Previously when you had the flag set to true, it would wait for any intro movies to complete before loading the level. Now it se ...

Mesh merge instancing can swap material ID

Travelling between two levels that share a sublevel will not update the positions of those actors in that sublevel

If you travel between two levels that both share the same sublevel then the actors within that shared sublevel will not update their positions regardless of their positions being saved at different ...

Postprocess volume priority bug

Check inside FAssetSourceControlContextMenuState/FPerforceSourceControlProvider

The async execution from within the context menu state is not cancelled properly when closing the context menu. This means that when rapidly opening and closing context menus there will be corruptio ...

Groom Assets do not cast shadows when the shadow casting light is close to the groom and virtual shadow maps are in use

When a shadow casting light is closer to the groom than some proportional amount the groom is away from the shadow catcher, the groom's shadow will disappear. This only occurs using VSMs. Raytraced ...