Unreal Engine Issues
Unreal Engine Issues
Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use
UE - Graphics Features - Sep 30, 2024Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...
[CrashReport] UE4Editor_UnrealEd!FBlueprintCompileReinstancer::ReplaceInstancesOfClass_Inner() [kismetreinstanceutilities.cpp:1880]
UE - Gameplay - Blueprint Compiler - Oct 5, 2017This is a somewhat common crash that has occurred throughout the 4.17 release. Users have not provided any description of their actions when the crash occurred. The callstack is similar to some ol ...
Error using Panoramic Capture Plugin with an absolute path
UE - Media Framework - Nov 17, 2023When using the Panoramic Capture Plugin to render 360-degree images, it is possible to specify the output directory of the generated files. This can be any absolute path, or any relative path starti ...
[CrashReport] UE4Editor_UMG!UPanelWidget::GetChildIndex() [panelwidget.cpp:52]
UE - Editor - UI Systems - Nov 10, 2017This is a trending crash coming out of the 4.18 release. User DescriptionsI did click on compile on a widget an UE4 crash Source Context 46 int32 UPanelWidget::GetChildIndex(UWidget* Conten ...
WorldPartitionActorDescs for LevelInstanceActors are broken when migrating world partitioned level
UE - World Creation - Worldbuilding Tools - Level Instances - Jun 13, 2023WorldPartionActorDescs will be restored to the correct properties when resaved. They can also be fixed by the WorldPartitionResaveActorsBuilder commandlet. ...
Compile failure packaging for Linux in arm-unknown-linux-gnueabihf from Windows
Tools - Apr 20, 2017Packaging for Linux is failing when setting the TargetArchitecture=ArmUnknownLinuxGnueabihf in the DefaultEngine.iniUATHelper: Packaging (Linux): UnrealBuildTool: C:\LinuxXC_ToolChain\v9_clang-4.0.0 ...
Crash after deleting Editor Utility Widget and accessing it from Window menu
Tools - Feb 25, 2019Crash after deleting Editor Utility Widget and accessing from Window menu ...
Direct Capsule Shadows with Point Lights also project shadow on opposite side and direction
UE - Graphics Features - Dec 14, 2016When using a Direct Capsule Shadows on a skeletal mesh with a Stationary Point light, depending on the point lights placement, light source radius, and nearby surfaces will cast the shadow on the op ...
Mouse cursor position is locked to center of screen when bShowMouseCursor is false
Tools - Nov 16, 2016When you set bShowMouseCursor to false in a Standalone or packaged game while Default Viewport Mouse Lock Mode is set to either Always Lock or Lock on Capture, the cursor will become locked in place ...
Translucent meshes randomly flicker when using VSM
UE - Rendering - Features - Jun 23, 2026Flickering can occur on translucent materials, usually in the distance when there is at least one directional light and when using VSM. Flickering seems highly dependent on framerate and timing. L ...