Unreal Engine Issues
Unreal Engine Issues
Vertex Interpolate Node Doesn't Work with Lightmass
UE - Graphics Features - Lumen - Aug 8, 2018The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...
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. ...
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 ...
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 ...
Interactive changes from In-Camera VFX widgets are not transacting to nDisplay until mouse is released
UE - Virtual Production - nDisplay - Oct 20, 2022Stop using power of 2 RTs for landscape edit layers
UE - Graphics Tools - Terrain - Landscape - Apr 4, 2023Result : all the RTs allocated for edit layers (in global merge mode) will be padded to the next power of 2 for no good reason, which can lead to out-of-VRAM (as reported by [Link Removed]) ...
Incorrect tooltip comment for the ConeHalfAngle property in BTDecorator_ConeCheck.h
UE - AI - Dec 31, 2014The comment (and resulting tooltip in the Editor) for the ConeHalfAngle property in BTDecorator_ConeCheck.h does not appear to be correct. The property seems to be controlling the angular size of th ...