Unreal Engine Issues
Unreal Engine Issues
Contact Offset no longer appears to have an effect
UE - Simulation - Physics - Jan 15, 2019When modifying the contact offset in a project it appears to have no effect. The setting that worked in a previous engine version (4.19) now collide in the same way as the default settings. ...
Target Gamma setting has no effect when using SceneCaptureActor which has no contribution from PostProcessInput0
UE - Graphics Features - Jun 4, 2020Expected result is that the Target Gamma slider would apply that calculation to what's being written to it. RT_PostProcess is a RTF RGBA8_SRGB render target being written to by a SceneCapture Acto ...
Local space particle with SkeletalMeshLocation on scaled mesh is doubly scaled
UE - Niagara - Jul 14, 2020MeshCurrSamplingBonesBuffer already has scaled bone transforms, but these scales have not been cancelled out when using local space. ...
bStaticWhenNotMoveable in Lighting category instead of Physics
UE - Simulation - Gameplay - Oct 24, 2025"UPrimitiveComponent::bStaticWhenNotMoveable"'s category is set to Lighting, not Physics. This causes it to be hidden when lighting-related properties are hidden, even though it controls physics sta ...
Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white
UE - Gameplay - Aug 4, 2016When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white. ...
Lighting channels are not supported with tiled lighting
UE - Graphics Features - Aug 15, 2016Reported via UDN ...
Hardware Raytracing on Lumen can cause a crash on AMD Radeon GPUs
UE - Graphics Features - Lumen - Jul 29, 2025Hardware Raytracing support can cause a crash on AMD Radeon GPUs when creating the RT pipeline state. ...
Clearcoat shader disappears if any asset using the Material leaves lighting
UE - Graphics Features - Aug 19, 2015Clearcoat Shader will stop receiving lighting information if any mesh assigned the material using the shader leaves lighting. Also Reproduced in Launcher 4.9 Preview 4, Main-CL-2660934 [Image Remo ...
OSVR does not consistently render to HMD if OSVR Server is not open prior to opening editor/cooked game
UE - Platform - XR - May 18, 2016It seems like if OSVR_Server is not launched prior to opening the editor, vr-preview functionality will not work (even though the editor starts OSVR_Server at launch). Seems like server must be open ...
Launching a packaged game calling DownloadImage with -nullRHI option crashes
UE - Editor - UI Systems - Oct 8, 2020When using nullrhi, the Texture->Resource variable in UAsyncTaskDownloadImage::HandleImageRequest is null and a crash occurs in WriteRawToTexture_RenderThread. ...