Unreal Engine Issues
Unreal Engine Issues
Crash when pressing Ctrl-Z after creating a blueprint function
UE - Gameplay - Blueprint - Feb 20, 2017Crash when pressing Ctrl-Z after creating a blueprint function *This is a regression: Working in 4.14.3-3249277 Not working in 4.15.0-3299760* Crash Reporter: Error message: Access violation ...
SkyLight Leaking does not affect reflections when the SkyLight is static but static lighting is disallowed
UE - Rendering - 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, ...
Nanite mesh socketed to a Skeletal Mesh is not affected by the 'Owner No See' or 'Only Owner See'
UE - Graphics Features - Nanite - Jun 22, 2022Nanite mesh socketed to a Skeletal Mesh is not affected by the 'Owner No See' or 'Only Owner See'. Compared this against a regular Static Mesh. ...
Water reflections and GI flicker in 5.4 and 5.3 (fine in 5.2)
UE - Rendering - Graphics Features - Mar 7, 2024Since 5.3 customers have been reporting flicker with water surfaces, demonstrating that in 5.2 this flicker is not present. [Link Removed] ...
UnrealVS: Compile Single File no longer working after upgrading to 5.3
UE - Foundation - Cpp Tools - UnrealVS - Oct 2, 2023After installing the UnrealVS version that arrived with 5.3. I can no longer use CompileSingleFile. It does however work on the Lyra project. One difference I notived, however, is that Lyra seems to ...
Scale box affects all children in a parent container widget when setting User Specified Scale
UE - Editor - UI Systems - Jul 5, 2018When a scale box is the the first child of a container widget, setting the user specified scale to 0 will affect all other widgets in the same parent container. ...
When r.CustomDepth = 3 (Enabled with Stencil), the values of SceneDepth and CustomDepth are different on IOS
UE - Graphics Features - Jan 7, 2019The user wants to express using the difference between SceneDepth and CustomDepth. However, when r.CustomDepth = 3 (Enabled with Stencil), the expression can not be realized because the SceneDepth a ...
TMaps with instanced objects: modifying instanced object data in child affects parent
UE - Gameplay - Blueprint - Jul 25, 2023Given a TMap where the value type is an instanced object: when a child blueprint is saved with modifications to the TMap, and then additional TMap are added to the parent blueprint and the child blu ...
Xcode 8.3.2 fails to successfully build 4.15.1 from source code
UE - Platform - Apple - May 2, 2017Attempting to build 4.15.1 from source code using Xcode 8.3.2 currently results in the build failing due to warnings that occur in fbxsdk, AlembicImporter, and MetalRHI. ...