Can't save level that has landscape layer material when moving level asset

UE - LD & Modeling - Terrain - Landscape - Sep 26, 2018

Can't save level that has landscape layer material when moving level asset. It look like regression,because it can save level asset in 4.19. This issue occur also that moving "Landsacape" level as ...

FTransform(ENoInit) ensures in Debug on mobile platforms

UE - Foundation - Core - Sep 25, 2018

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 ...

Get Input Touch State produces incorrect vector position

UE - Gameplay - Input - Sep 25, 2018

Get Input Touch State produces incorrect vector position when using it on Android. Tested in 4.19.2 (CL - 4033788), 4.20.3 (CL - 4369336), 4.21 (CL - 4395058) ...

HLOD visibility state isn't cleared when changing scene

UE - Graphics Features - Sep 25, 2018

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

UE - Networking - Sep 25, 2018

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 ...

InstallVisualizers.bat does not install debug Visualizers for Visual Studio 2017

UE - Foundation - Core - Sep 24, 2018

The InstallVisualizers.bat file for 4.20 does not include a way to install the Visualizers for Visual Studio 2017. With Visual Studio 2017 now the default Windows IDE for the Engine, it may be helpf ...

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

UE - Editor - Content Pipeline - Datasmith - Exporters - Sep 24, 2018

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 ...

Missing Service Node warning when opening project

UE - AI - Sep 24, 2018

Services in the Behavior Tree sometimes don't work when the project is first loaded. The Behavior Tree will print a "missing service node" warning and the BT will remain inactive. This was reported ...

MSAA depthbuffer never be released on Android

UE - Platform - Mobile - Sep 24, 2018

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

Tools - Sep 23, 2018

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