Unreal Engine Issues
Unreal Engine Issues
Scene Color node with UV input on a transparent material renders incorrectly in stereo
UE - Platform - XR - Jan 19, 2021From Licensee: When we have Instanced Stereo enabled, all our materials that use Scene expression nodes (SceneDepth, SceneColor, etc...), render incorrectly in the right eye. It only happens to the ...
Build Error when using ENUM without 0 entry
UE - Foundation - Cpp Tools - UnrealHeaderTool - Nov 26, 2019Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)
UE - Rendering Architecture - Materials - Jun 25, 2024Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...
"Fix root motion initial rotation handling" commit breaks root motion completely
OLD - Anim - Dec 18, 2014Enabling and processing root motion causes animation to rotate the wrong direction. Roll instead of Yaw. Pitch instead of roll etc. This error does not occur in UE 4.6. ...
BlendSpace DeltaTimeRecord.Delta can incorrectly be set to zero
UE - Anim - Runtime - Apr 19, 2024It's possible for blendspaces to end up with an invalid delta time record because of how UBlendSpace::TickAssetPlayer modifies the time record. This only seems to happen with specific settings:Axis ...
4.23 UpdateGrass took twice time than 4.22
UE - World Creation - Worldbuilding Tools - Foliage - Sep 12, 2019Metasounds - Using the Audio Component Play Node with a start timer other than 0 results in the Metasound ceasing to function
UE - Audio - MetaSounds - Dec 2, 2021Metasounds cease functionality if called to Play with a different start time other than 0. This extends to the Metasound editor where pressing play to preview the sound also ceases to function. ...
In a Geometry Collection, enabling Nanite Fallback in a Nanite Enabled collection won't generate a Physics Body when Nanite is disabled
UE - Simulation - Physics - Destruction - Jun 30, 2025In a Geometry Collection, enabling Nanite Fallback in a Nanite Enabled collection won't generate a Physics Body when Nanite is disabled. To verify this, follow the steps provided in the Steps to Re ...
Subsurface Profile material in scene capture with r.SubsurfaceScattering set to 0 causes wrong value in alpha channel
UE - Graphics Features - Substrate - Jul 24, 2023[MetaSounds][Trigger Route] - If Value 0 is a non-zero value and Value 1 is a zero value, the output "pops" on triggering Set
UE - Audio - MetaSounds - Mar 18, 2022When using the Trigger Route node, if Value 0 is a non-zero value and Value 1 is a zero value, the output "pops" on set. [Link Removed] ...