Unreal Engine Issues
Unreal Engine Issues
Collision filtering issue when multiple shapes on an actor
UE - Simulation - Physics - Jul 22, 2022Collision filtering is producing unexpected results in certain setup. Objects are passing through one another when they are expected to collide. ...
Camera View Transformations in Editor and Sequencer Cannot Be Undo (Ctrl+Z)
UE - Anim - Sequencer - May 26, 2025Camera View Transformations in Editor and Sequencer Cannot Be Undo (Ctrl+Z) Description: When switching the viewport to a specific camera actor, any manual movement/rotation of the camera (via ...
Instanced MovieSceneEventParameters does not save updated values upon level load
UE - Anim - Sequencer - Jun 24, 2019Any instanced Actor with a public MovieSceneEventParameter struct doesn't retain any altered values on level load. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647 , 4.24 Main CL#7173985 ...
Failure to add key and potential crash when adding keyframe to sequence through details panel
UE - Anim - Sequencer - Jan 21, 2021There is the potential for a crash when adding a key through the details panel. In cases where there is no crash the key is not added. ...
Landscape cooking takes as much as 6 times longer in 4.18
UE - LD & Modeling - Terrain - Landscape - Jan 10, 2018Some developers are finding that the change to add a bunch of shader types to FLandscapeMaterialResource::GetExcludedShaderTypes() in 4.18.2 increased their project cooking times on PC or console by ...
IOS binaries are not included when a plugin is packaged for IOS using a binary Engine installation
UE - Foundation - Cpp Tools - UnrealBuildTool - Aug 7, 2018Packaging a plugin for the IOS platform on a Mac completes successfully, but there are no IOS binaries included in the packaged plugin. Once the package process completes, the packaged plugin only c ...
SSR Does Not Work On Mobile or Mobile Preview
UE - Platform - Mobile - Mar 7, 2017In our Docs page SSR is listed as compatible with mobile here: https://docs.unrealengine.com/latest/INT/Platforms/Mobile/PostProcessEffects/ While testing this doesn't seem to be the case so either ...
Remove reference to editor assets in cooked build from landscape visibility layer
UE - LD & Modeling - Terrain - Landscape - May 21, 2020As soon as the visibility tool is used, we're adding references to the "/Engine/EditorLandscapeResources/DataLayer" asset from landscape components. If the user decides to cook without editor data ...
When OpenGL ES 3.1 is enabled for Android build in Handheld AR Template, camera inverts colors
UE - Platform - XR - Mar 26, 2018When OpenGL ES 3.1 is enabled in Android Build settings, device prompts user to choose to "Allow ARInvertColor to take pictures and record video". If allowed, colors are inverted by the camera. If ...
Material Instance Can't Update Material Parameters Defined in a Material Function Within a Material Layer
UE - Rendering Architecture - Materials - Nov 21, 2018When you edit the parameters of a material function that is within a material layer from the material instance, the material instance does not update. Found in 4.20 CL# 4369336, 4.21 CL# 4541578, a ...