FSkeletalMeshRenderData::Cache doesn't store and restore versions

UE - Anim - Rigging - Aug 18, 2022

A licensee was trying to extend the FSkelMeshSection, FSkelMeshRenderSection and USkeletalMesh serialisers with their licensee version number and found that the FSkeletalMeshRenderData::Cache functi ...

Non-Power of 2 images are not rendering on iOS devices

UE - Platform - Mobile - Feb 2, 2015

If you create a UMG with an image in the Umg that is not a power of 2, The image will not appear on an iOS device. Tested this on a Android device (Nexus 5 with ETC1 and ATC. PVRTC will not allow t ...

Package game and standalone game crashing (possibly related to UE-6766)

UE - Gameplay - Dec 23, 2014

Crashes in UGameplayStatics::GetPlayerController, probably because World is NULL. When you package this vehicle game setup or play in standalone, the game will crash. 4.6.1 release crash (Standalo ...

Clothing Data Cannot Be Created If The Old Data Was Deleted While Applied

UE - Simulation - Physics - Character - Jan 16, 2020

When you delete clothing data on a skeletal mesh before removing it you cannot apply new clothing data. The engine still thinks that there is clothing data is applied. I tested using the Paragon: Tw ...

Alembic Geometry Cache is corrupted on reopening of project leading to crash

UE - Foundation - Core - Dec 20, 2016

Alembic Geometry Cache crash when re-opening the project and a map that contains this asset or adding it to any existing/new levels will instantly crash the editor. This asset works correctly in the ...

Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs

UE - Gameplay - Blueprint - Feb 4, 2015

Copy/pasting a Custom Event that has input names containing spaces will create a Custom Event with extra inputs. It appears that an input name with a space in it will be copied as two inputs, the fi ...

FBX Transform does not scale skeletal mesh with multiple pieces properly using the Import Uniform Scale option

UE - Editor - Content Pipeline - Import and Export - Aug 15, 2016

Importing a skeletal mesh fbx from blender and setting the Import Uniform Scale option for the mesh to a higher value, like 100, results in only one of the meshes being scaled while the other is lef ...

Audio in animation editor does not work properly

OLD - Anim - Apr 21, 2017

There are multiple issues with the code at present 1) The animation preview world listener is not updated. This can be solved with the following override on AnimationEditorViewportClient (Following ...

The DefaultSceneRoot's tooltip claims adding a new scene component will automatically replace it as the new root, but this is no longer true

UE - Gameplay - Components - Jun 24, 2015

The DefaultSceneRoot's tooltip claims, "Adding a new scene component will automatically replace it as the new root", but this is no longer true in 4.8 and 4.9. Instead, the DefaultSceneRoot remains ...

MS_VertexAnimationTools_MorphTargets are not deforming and reforming

UE - Graphics Features - Sep 20, 2017

The Material should be contracting and expanding if it is working correctly, but after version 4.16 it is not. Instead it is solid in appearance in the material editor viewport. Below I have linked ...