Unreal Engine Issues
Unreal Engine Issues
UClass::HasProperty() returns true for properties in a child class even though the comment for the function indicates it checks for the property in the current class and parents of the current class
UE - Foundation - Core - Dec 21, 2018The comment describing UClass::HasProperty() indicates that it checks to see if a specified property exists in a class, or a parent of that class. However, when a property that exists in a child of ...
Light function does not work with volumetric fog when not compatible with light atlas
UE - Graphics Features - Mar 28, 2025Light functions do not work as intended with volumetric fog when using clamped mask textures which are not compatible with the light function atlas. In light functions materials, when using any UV ...
Duplicated PCG Component instance resets overridden parameters to default
UE - World Creation - Procedural Tools - PCG Component - Jun 4, 2025Context: Similar to parameters in the Material editor, PCG Graph Parameters are user created overridable values and can help create customizable graphs for a variety of situations. Problem: The l ...
Toggling a Spline component from an open/closed loop through bp's isn't reflected
Tools - Jan 19, 2015Toggling a Spline component from an open/closed loop through bp's isn't reflected ...
Groom Hair Visual Issue with RBF Interpolation Enabled
UE - Graphics Features - Feb 19, 2025When "RBF Interpolation" is enabled in the Groom settings, applying an Animation Sequence to a Skeletal Mesh that animates at a position far from the world origin causes the bound Groom shape to bec ...
Dynamic Parameters do not function in Beam Emitters
UE - Graphics Features - Apr 10, 2015Transfered Issue from TTP # 298314, originally opened in TTP on 6/3/2013 and updated with Answerhub post information on 5/18/2014 Dynamic Parameters cannot be used with a Beam Emitter, they pass no ...
bIgnoreAllPressedKeysUntilRelease behaves differently for triggers in EnhancedInputAction and triggers in InputMappingContext
UE - Gameplay - Input - Aug 10, 2023For actions that are triggered on the Input mapping context, simply adding or removing an InputMappingContext with no related key override with the bIgnoreAllPressedKeysUntilRelease option will caus ...
Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer
UE - Simulation - Physics - Destruction - Aug 26, 2025Geometry Collection's Chaos Cache Static Pose Scrubbing broken in 5.6 due to Custom Renderer GeometryCollectionRootProxyRenderer. The licensee has provided his analysis: In 5.6, when creating a Geo ...
Improper Rendering of Paper Sprites in Translucent Sort Axis.
UE - Graphics Features - Apr 8, 2019Regression as of 4.22. Translucent Depth Sort Policy results in improper rendering ( Z-Fighting flickering) with Paper2D Sprite Components. ...
C++ Third Person Template project crashes when opened
UE - Anim - Runtime - Mar 16, 2022Third Person C++ project crashing on open on Android Devices 4/4 Repro rate ...