Unreal Engine Issues
Unreal Engine Issues
UWheeledVehicleMovementComponent no longer contains an IsFalling variable
UE - Gameplay - Dec 8, 2016UWheeledVehicleMovementComponent no longer has an IsFalling variable. It originally inherited from UPawnMovementComponent which it gained this variable from but now inherits directly from UMovementC ...
Set Material in Blueprint Causing Crash
UE - Graphics Features - Jul 30, 2018Using "Set Material" for a static mesh in blueprint causes a crash. Working properly in 4.19 CL# 4033788 Found in 4.20 CL# 4233996 and 4.21 CL# 4234136 This is a regression. ...
HLOD visibility state isn't cleared when changing scene
UE - Graphics Features - Sep 25, 2018HLOD state is not cleared when moving to a scene without HLOD so primitives may read the state from the old scene and incorrectly cull objects. The safe fix is to clear the HLOD state maps when the ...
Lightmap Density Of Imported FBX Offsetting When Lighting Is Built
UE - Graphics Features - Oct 8, 2018Lightmap density of imported fbxs will be offset when lighting is built. Working as expected in 4.19 CL# 4033788 Found in 4.20 CL# 4369336, 4.22 CL# 4433008 This is a regression ...
Custom Stencil Not Working for Mobile
UE - Platform - Mobile - Nov 14, 2018Setting a custom stencil on meshes is not working when using a mobile renderer. This is working as expected in 4.20 CL# 4369336 Found in 4.21 CL# 4541578 and 4.22 CL# 4556068 This is a regression ...
Blueprint inherited from StaticMeshActor will fail to compile if StaticMesh is NULL
UE - Gameplay - Blueprint - Jan 10, 2019Spot Lights Do Not Cast Dynamic Shadows If "Support PointLight WholeSceneShadows" is disabled
UE - Graphics Features - Jan 30, 2019If you disable "Support PointLight WholeSceneShadows" spotlights stop casting shadows. This is working as expected in 4.20 CL# 4369336. Found in 4.21 CL# 4753647 and 4.22 CL# 4809892 This is a reg ...
NotBlueprintable User Widgets appear as option for Root Widget
UE - AI Workflows - UI Systems - Jan 5, 2023Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Attempting to select NotBlueprintable Widget results in a pop-up saying that it's not ...
Materials with transparency still visible in alpha with holdout in Render layers.
TM - Tools - Mar 8, 2024The Transparent materials like the Glass don't behave correctly in Raster (in PT is working as expected). They are visible in Alpha with Holdout. This is an Engine limitation for now. But we sho ...
UInstancedStaticMeshComponent::AddInstances does not appear to be adding per-instance previous transforms when enabled
UE - Rendering - Features - Dec 3, 2025Instanced static mesh component does not add instances transforms to PerInstancePrevTransform array when using UInstancedStaticMeshComponent::AddInstances. Additionally Updating the transforms of th ...