Unreal Engine Issues
Unreal Engine Issues
SetControlRotation does not affect VR
UE - Platform - XR - Oct 1, 2015Using a Set Control Rotation node does not change the camera rotation when in VR mode. ...
Creating a BSP modifies the default brush, adversely affecting placement of Volumes
UE - LD & Modeling - Modeling Tools - BSP - Aug 12, 2016When a new BSP is created, modifications are made to the level's default brush. These changes affect how volumes are placed, with different BSPs causing different behavior in volume placement. ...
Specular Isn't Affected for Materials Set to the Eye Shader If r.IrisNormal is Enabled
UE - Graphics Features - Aug 27, 2019Specular Doesn't Affect a Material with the Eye Shader If r.IrisNormal is enabled. Found in 4.22 CL# 7053642, 4.23 CL# 8115738, 4.24 CL# 8302014 ...
image size does not appear to have any affect when a progress bar's image is set to tile
UE - Editor - UI Systems - Slate - Jun 15, 2015When trying to set the image size for the image that is tiled in a progress bar, this does not appear to have any affect. The expected result would be for it to modify the size of the image so as to ...
Convex hull generation fails when first 3 verts are colinear
UE - Simulation - Core - Dec 9, 2025The licensee identified a number of cases where loading assets will trigger convex hull generation warnings:If the first 3 verts in the set are colinear (in which case IsPlanarShape() returns true b ...
On Drop appears to cause update issues with widgets that are affected On Drag Enter
UE - Editor - UI Systems - Jan 3, 2017On Drop appears to cause update issues with widgets that are affected On Drag Enter. In this example the widget only changes colors if a delay is placed in the On Drop function. The On Drop function ...
AnimBP instance is leaked when using linked animation graphs with 3 or more hierarchies
UE - Anim - Runtime - Sep 5, 2022When creating an AnimBP with 3 or more layers using linked AnimGraph nodes and going through a state where animation is initialized such as replacing SekeltalMesh, the AnimBP on the 3rd layer is not ...
[CrashReport] UE4Editor_CoreUObject!FCompressedChunk::FCompressedChunk()
UE - Foundation - Core - Jul 24, 2017This is a common crash affecting users in 4.16 and the 4.17 Previews. The two descriptions provided by users say their crash occurred after updating their project from 4.13. User DescriptionsUpgra ...
SkyLight Leaking does not affect reflections when the SkyLight is static but static lighting is disallowed
UE - Graphics Features - Sep 10, 2025Reflections do not receive SkyLight leakage contribution from a static SkyLight when static lighting is disallowed. This is caused by the function UpdateSkyIrradianceGpuBuffer checking if the SkyLig ...
Unable to affect setting cubemap blend in skyLight and reflections on transluscent materials
UE - Rendering Architecture - Oct 17, 2023Attempting to blend SkyLight Cubemaps via the SetCubemapBlend function to blend between different Cubemaps to make the changes seamless is not reflected. As a workaround, in LumenTracingCommon.ush, ...