Unreal Engine Issues
Unreal Engine Issues
Incorrect values filled for nativized struct arrays when resized and packaged
UE - Gameplay - Jun 4, 2018When packaging a resized structure array it changes the array value to a large incorrect number. Testing the struct in PIE yields expected results. ...
Generation of sub-level LOD doesn't work when forward rendering is used
UE - World Creation - Worldbuilding Tools - World Composition - Mar 9, 2020When using WorldComposition and building LOD for a sublevel, textures of generated Landscape LOD are not correct when the project has forward rendering enabled. The issue is that the material gener ...
RemoteToolChainPrivate.key permissions issue with Microsoft account Windows users
UE - Platform - Mobile - May 14, 2020Also have attach that exact RemoteToolChainPrivate.key file Logs when attempting to launch TM-ShaderModels Error:[Remote] Using private key at C:\Users\varun\AppData\Roaming\Unreal Engine\UnrealBu ...
[MetaSounds][Ladder Filter] - Ladder Filter Produces Incorrect Output when the Sample Rate is not 48kHz
UE - Audio - MetaSounds - Oct 30, 2023When the Sample Rate of the Audio Mixer or device is not 48kHz, the Ladder Filter output is not correct on PIE. It is Silent at 20000Hz, and other frequencies also sound wrong. ...
[MetaSounds][Biquad Filter] - Biquad Filter Produces Incorrect Output when the Sample Rate is not 48kHz
UE - Audio - MetaSounds - Oct 30, 2023When the Sample Rate of the Audio Mixer or device is not 48kHz, the Biquad Filter output is not correct on PIE. It is Silent at 20000Hz, and other frequencies also sound wrong. See [Link Removed] ...
Natively declared Gameplay Tags aren't counted by Reference Viewer when set default by ctor
UE - Gameplay - Jul 11, 2024Similar to Issue 199247 ([Link Removed]), Natively declared Gameplay Tags aren't counted by Reference Viewer when used in a variable set in a C++ ctor. ...
Arrays in UMaterialEditorInstanceConstant are not updated
UE - Rendering - Architecture - Materials - Jun 13, 2025Any UPROPERTY TArray added to UMaterialEditorInstanceConstant will not cause UI updates when elements are added or removed. This is caused by the custom validator created in FMaterialInstanceEditor ...
Point Lights Invlidate Virtual Shadow Map Cache when at a distance from attenuation radius
UE - Rendering - Features - Oct 28, 2025When the camera is outside of a certain distance from a point lights attenuation radius the VSM of that point light stops caching shadow maps. This can also be reflected in the output from the 'r.S ...
Extending Montage Segment length causes length to reset to default in new Editor Session
OLD - Anim - Jan 4, 2016Licensee is encountering an issue where they would like a segment of a montage to end and hold the last frame for the remainder of the segment length. He is doing this by adjusting the End Time und ...
Component tags do not register on actors
UE - Gameplay - Oct 30, 2015Component tags do not register when checked within blueprints. ...