Unreal Engine Issues
Unreal Engine Issues
Foliage rendering issues when using both Density Scaling and MaxWorldPositionOffsetDisplacement
UE - Rendering Architecture - Aug 29, 2024When a material with WPO effects and MaxWorldPositionOffsetDisplacement is applied to a foliage mesh, foliage applied to a map will no longer work as expected with density scaling, especially after ...
Decals custom depth/stencil side effect from Lumen
UE - Graphics Features - Oct 15, 2024The order of passes related to Decal rendering (without the DBuffer) and CustomDepth is changed by the CVar "r.Lumen.AsyncCompute", even when Lumen is not enabled. This causes Decal Materials that ...
Setting a parent and child static mesh scale to negative effects the rotation on child movement
UE - Gameplay - Jun 1, 2016Setting a parent and child static mesh scale to negative effects the rotation on child movement This is a regression. Worked in 4.11.2. User Description: We have a simple project example (see att ...
Max Pitch Angle does not correctly apply when utilized in procedural foliage volumes
UE - World Creation - Worldbuilding Tools - Foliage - Aug 27, 2015Random Pitch Angle does not properly apply when called within a procedural foliage volume. ...
UFE Deploying and launching a packaged build on Linux fails due to invalid directory
UE - Platform - Linux - Dec 22, 2016Deploying and launching a packaged project, using a Custom Launch Profile that is set to copy the project to a repository, fails due to a missing /. I do not see this issue when running a Quick Lau ...
Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log
UE - Gameplay - Blueprint - Apr 27, 2016Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log User Description: I think this should be brought up as these seems to be a ...
Material LocalPosition node does not work correctly with Nanite Skinned meshes
UE - Graphics Features - Dec 1, 2025Nanite Skinned Meshes don't receive the correct Local Position in some shadow passes. This depends on the clipmap level, and is not related to VSM caching. Unreal Engine 5.6 shows the same issue, b ...
Destructible attached with a Physics Constraint have inconsistent physics
UE - Simulation - Physics - Destruction - Jul 26, 2016Destructible attached with a Physics Constraint have inconsistent physics compared to a standard Static Mesh. This is also sometimes prevalent with Destructibles that aren't attached with a Physics ...
Sub-components with the same name are not displayed on the correct parents in the Blueprints editor
UE - Gameplay - Oct 12, 2018Sub-components with the same name are not displayed on the correct parents in the Blueprints editor. Upon creation of an Actor blueprint initially derived from a c++ base class (VRCharacter) which ...
AbilitySystemComponent::NotifyAbilityEnded Can Crash due to Callbacks Invalidation Specs
UE - Gameplay - Gameplay Ability System - Oct 11, 2023Pasting from the UDN: Unsafe code in AbilitySystem can lead to crash when granting an ability inside OnAbilityEnded Hello. We just ran into a crash. After investigation, it seems to be caused by ...