Unreal Engine Issues
Unreal Engine Issues
Light function does not work with volumetric fog when not compatible with light atlas
UE - Graphics Features - Mar 28, 2025Light functions do not work as intended with volumetric fog when using clamped mask textures which are not compatible with the light function atlas. In light functions materials, when using any UV ...
In AnimNode_RigidBody.cpp, PhysicsSimulation->CreateActor() is being passed World Space transforms, when it should be getting Local Simulation space transforms
UE - Simulation - Physics - Jun 24, 2025In AnimNode_RigidBody.cpp, PhysicsSimulation->CreateActor() is being passed World Space transforms, when it should be getting Local Simulation space transforms. The licensee has reported that FAnimN ...
DDC corruption creates incorrect pasted topology when using Landscape Copy / Paste Tool
UE - LD & Modeling - Terrain - Landscape - Apr 3, 2017I noticed that the copy and pasted section of the level was being painted while I was painting a nearby section of the level. This weird yellow color appeared and I undid and redid the paint to make ...
Regression for UPROPERTY specifier causing crash ("Template Mismatch during attachment") during PIE
UE - Foundation - Core - Jun 19, 2015If the UPROPERTY() specifier "VisibleDefaultsOnly" or "EditDefaultsOnly" is used on a component reference that is attached to the root component selecting the actor with this component in the world ...
RPCUtility cannot be built in 4.22
UE - Foundation - Cpp Tools - Feb 22, 2019The RPCUtility binaries cannot be built in 4.22 due to an issue with DotNETUtilities. When attempting to build the RPCUtility binaries as part of the BuildCommonTools command, the build provides a w ...
Server Travel from Map A to Map B then back to Map A will crash on exiting PIE
UE - Gameplay - Jul 10, 2015Server Travel from Map A to Map B then back to Map A will crash on exiting PIE. Generates different call stacks between 4.8.1 and Main. Crash Reporter: 4.8.1: [Link Removed] Main: [Link Removed] ...
Component in Child Blueprint Parented to Inherited Component Disappears
UE - Gameplay - Components - Mar 4, 2016When you have a child blueprint that contains a component that is parented to an inherited component, changing a value on that inherited component in the original parent blueprint and then compiling ...
Destruction mesh with Crumble Smallest and Impact near another will leave residual mesh visible
UE - Simulation - Physics - Destruction - Jan 28, 2015When using a DM that has Crumble Smallest and Impact damage enabled there will be instances where the residual mesh before fracture is left behind. What appears to happen is there is a force large e ...
Fail to compile with Added AIController class
UE - Foundation - Core - Jan 14, 2015User fails to compile code template after adding AIController code to project. Regression: Not a regression happens in 4.6.1 CL-2386410 Setting up Mono Building MyProjectEditor... Compiling game m ...
The AngularLimit visualizer isn't displayed as expected when adjusting the AngularRotationOffset
UE - Simulation - Physics - Dec 9, 2016The AngularLimit visualizer isn't displayed as expected when adjusting the AngularRotationOffset. You can manually rotate the PhysicsConstraint and it will rotate the AngularLimit visualizer, howe ...