Unreal Engine Issues
Unreal Engine Issues
TSparseArray NatVis visualizer doesn't work for arrays that use TInlineSparseArrayAllocator
UE - Core - Cpp Tools - Nov 6, 2025The NatVis visualizer allows many custom Unreal types to be displayed in a helpful manner inside the Visual Studio watch window. One such type is TSparseArray. Under normal circumstances, visualizin ...
Sound Class Radio Filter Volume Functionality
UE - Audio - Jan 12, 2015When creating a Sound Class and editing/applying the 'Radio Filter Volume' option, the sounds associated with the sound class seem to have their attenuation settings overridden or mixed in with an i ...
Reflections Appear Black
UE - Graphics Features - Nov 13, 2015Adding Screen Space reflections to a Translucent Material Causes black reflections. Sometimes the reflections are completely white and do not change when changing the intensity of the lighting. [L ...
Localization warnings when opening a new project in 4.8.1
Tools - Jul 2, 2015There are a couple of warnings that show up in the output log that are dealing with localization when opening up a new project. ...
Scale of the parent of a Motion Controller Component is ignored
UE - Platform - XR - Nov 17, 2016Seems like although you can set a scale on a MotionController component, the scale of the parent of the motion controller component is ignored. ...
Major performance drop with instanced meshes since PhysX 3.4 upgrade
UE - Simulation - Physics - Mar 15, 2017Major performance drop with instanced meshes since PhysX 3.4 upgrade Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) For me, my results were: 4.8 through 4.13 No Collision - ...
The "Random Integer in Range from Stream" returns the same value if the seed is power of 2 of anything above 22.
UE - Foundation - Core - Aug 7, 2019When using the "Random Integer in Range from Stream" where the seed is a power of 2 after a certain point (2^22) the random integer that is returned is the always the same. If the seed is 2^23 + 1 i ...
'Skip Assigning Gamepad to Player 1' routes MotionController input to non-vr player
UE - Gameplay - Input - Jan 4, 2020Motion controller inputs get routed to non-vr player when 'Skip Assigning Gamepad to Player 1' is enabled. ...
Opening Editor preferences window while simulating and pressing Play/Stop causes memory leak
UE - Foundation - Core - EditorLoader - Feb 3, 2020An open but minimized Editor Preferences window causes a memory leak while simulating and repeatedly pressing Play/Stop. ...
Game thread anim task evaluation can happen on first frame update even when bTickAnimationOnSkeletalMeshInit is unset
UE - Runtime - Anim BP - Nov 28, 2024The bTickAnimationOnSkeletalMeshInit should prevent a game thread update of the anim instance on the frame that a mesh is spawned. However, a bug in RefreshBoneTransforms is resulting in a game thr ...