Unreal Engine Issues
Unreal Engine Issues
UE5.4 Preview 1 produces rendering artifacts on Landscape with World Position Offset
UE - Graphics Tools - Terrain - Landscape - Mar 28, 2024A material on a landscape with WPO will cause major ghosting, even if that WPO is a dynamic {0,0,0} ,such as from a black texture. ...
Mesh Decal Material Influced By Emissive In Shader Complexity View Mode
UE - Graphics Features - May 4, 2017The emissive value influences how a mesh decal material appears in the shader complexity view mode. The value of 1 will register as white and .5 is pink. ...
Font advance and fallback font metrics have issues in 4.16
UE - Editor - UI Systems - Slate - Jun 5, 2017There were some font regressions in 4.16 that we've since fixed (CL# 3456916 and CL# 3425681). These are affecting live users so we should get them into the next 4.16 build. ...
Lighting Channels Do Not Function with 78+ Lights on Actor
UE - Graphics Features - Oct 20, 2017Lighting channels do not function when the number of lights affecting actors is 79 or higher. Any number of lights that is 78 or fewer will honor lighting channel assignments. ...
Editor crashes after executing the command r.DisplayInternals 1 or r.DisplayInternals = 1
UE - Rendering - Features - Nov 2, 2022This is not a regression. Tested in //UE5/Release-5.0 CL22346211 Editor crashes with an assertion after executing the command r.DisplayInternals 1 or r.DisplayInternals = 1 ...
Previewing a node overrides the output of PostProceessInput0 in a Post Process Domain Material after previewing has stopped
UE - Rendering - Architecture - Materials - Jan 26, 2023This is not a regression. Tested in //UE5/Release-5.1 CL20979098 Previewing a node overrides the output of PostProceessInput0 in a Post Process Domain Material after previewing stops. ...
Groom couldn't be rendered into ObjectID pass through MRQ
zComponent - Archive - Jan 30, 2024Raise the issue here since also other Developers met the same problem and reported to me. Object ID rendering for Groom is working in previous version(5.0 for example) ...
"Assertion failed: CellIndex < CellIndexMax" when there are a lot of HISM foliage in a level
UE - Engine Scaling - Streaming - Foliage - Aug 19, 2024Users have come across an issue in 5.4 that causes an assert when many foliage or HISM objects are placed in a level due to a cell size limit. ...
Debug lines can be obscured by post processing effects
UE - Graphics Features - Sep 14, 2015Debug lines (Results of DrawDebugLine()) can be obscured by post processing effects such as a strong glare. Debug lines should be always visible for debugging purposes. ...
Division by zero in FAnimNode_StrideWarping::EvaluateSkeletalControl_AnyThread
UE - MVF Character - Animation - Sep 29, 2025When an Actor's CustomTimeDilation is 0.0, functions FActorTickFunction::ExecuteTick() and FActorComponentTickFunction::ExecuteTickHelper() will call AActor::TickActor() and UActorComponent::TickCom ...