Unreal Engine Issues
Unreal Engine Issues
SpeedTree Material No Longer Compiles With Texture Coordinate Node In BaseColor
UE - Graphics Features - Jan 25, 2017If you open a material with the speedtree node plugged into WPO and then use a texture coordinate(index of 2) in base color the material will no longer compile properly. The full error is "Error [ ...
Crash when selecting Edit Map for Paper Tile Map Actor
UE - Gameplay - Jul 12, 2017Crash when pressing the Edit Map button for the Rendering Component of the Paper Tile Map Actor. If a new empty map is created first, the crash doesn't occur. User Description: Whenever I try to c ...
Unable to locally rotate individual foliage
UE - World Creation - Worldbuilding Tools - Foliage - Jul 14, 2017Unable to locally rotate individual foliage. This seems to have been a limitation of the foliage tool from it's creation. Licensee Description: I would like to ask if there is any way how to preve ...
Material Parameters aren't unique if the Material Function has been duplicated
UE - Graphics Features - Jul 31, 2017Material Parameters aren't unique if the Material Functions has been duplicated, When the parameters are enabled in a Material Instance, one will be disabled on Material Instance close. This is a r ...
Importing FBX creates new materials when using the search materials import setting
UE - Editor - Content Pipeline - Import and Export - Nov 1, 2017There is an issue when importing FBX that creates new materials when using the search materials import setting. Instead of being able to use the material that is in the Base Material name, the textu ...
Assign Event On Destroyed no longer creates Custom Event Node
UE - Gameplay - Blueprint Editor - Oct 9, 2018When creating a new Blueprint Class based on an Actor parent, If you navigate to the Actor's event graph, and right click on the editor blank space; type "Assign on Destroyed" and select "Assign ...
Crash: Unhandled exception UE4Editor_Renderer!FMobileBasePassMeshProcessor::Process
UE - Graphics Features - Mar 14, 2019HUD can cause a crash when used with Mobile. "When running from visual studio exception happens here: https://github.com/EpicGames/UnrealEngine/blob/4.22/Engine/Source/Runtime/Renderer/Private/Mobi ...
Disabling DFAO prevents landscape from contributing to Lumen scene
UE - Graphics Features - Lumen - Oct 10, 2023From licensee: We disabled DFAO on our project (using r.DistanceFieldAO 0) to replace it with Lumen occlusion, as the combination of both was creating dark blobs under bushes and grass. However, we ...
Iris - large fast arrays serialize multiple elements when only one is dirtied
UE - Networking - Iris - Apr 8, 2025This seems to be a result of how the changemask is handled for fast arrays. Because the changemask is a fixed set of bits (defined by IrisFastArrayChangeMaskBits), a single bit can represent multipl ...
Playing sequences in reverse snaps after sequence has first ran
UE - Anim - Sequencer - Dec 29, 2016I first came across this bug when I was working with Actor Sequences and noticed that the door I had opening would snap back when I tried to close it. Later I discovered that the issue was with play ...