Unreal Engine Issues

UE4Editor does not start when there are no audio devices available

UE4Editor does not open when there are no audio input or output devices available. The editor hangs at 83% after it initializes the AudioMixer. This issue looks like it was caused by CL 4396954. Et ...

Local binary build fails with iOS platform included

This report is very similar to [Link Removed] (the command line used to run the build is slightly different), but the build fails with a different error. In this case, a source file is being looked ...

Replication node decorator does not appear on Timelines that are set to replicate

A licensee has reported that Timeline nodes that are set to replicate do not have the replicated node decorator added, which would be seen on other nodes and variables that are replicated. Please re ...

FTransform(ENoInit) ensures in Debug on mobile platforms

As of 4.20, ENABLE_NAN_DIAGNOSTIC is now enabled in all Debug configurations. However, this does not work well with the TransformNonVectorized that is used on platforms like android. If this combina ...

HLOD visibility state isn't cleared when changing scene

HLOD state is not cleared when moving to a scene without HLOD so primitives may read the state from the old scene and incorrectly cull objects. The safe fix is to clear the HLOD state maps when the ...

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable

When a client sends an Unreliable RPC to the Server in same frame with a Reliable RPC, Unreliable RPCs are Reliable. It implies extremely high lag on each lost RPC and all following ones. User lose ...

SketchUp models are too small once imported via the Datasmith plug-in

In Sketchup the user made a cube thats 100cm x 100cm x100cm and has Sketchup's measure units set to cm. When imported into DataSmith the cube is 39x39x39. It was calculated that the scaling was off ...

MSAA depthbuffer never be released on Android

Object Type (Collision presets) not updating immediately after toggling 'Simulate Physics'

Collison -> Collision Presets -> Object Type does not immediately update when toggling simulate physics. Tested in Main CL 4374913 ...

Allow multicast RPCs to be recorded by replays in NM_Standalone

No game net driver exists in a standalone game, so there is currently no code path to forward multicast RPC calls to the demo net driver for recording. ...