Unreal Engine Issues
Unreal Engine Issues
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 ...
Temporal blur artifacts on Geometry Cache Components in Blueprint actor
UE - Graphics Features - Jan 9, 2026When a Geometry Collection is in a Blueprint, attached to other components, it can render incorrect motion vectors at some angles. In the test project, any angle that is not a multiple of 45 will re ...
GetAllocatedSize returns inaccurate number of bytes
UE - Foundation - Core - May 20, 2015When calling GetAllocatedSize() on a TBitArray it will round down the result of MaxBits / NumBitsPerDWORD. This means that not enough bytes are allocated when the MaxBits is not divisible by NumBi ...
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 ...
Level will crash if Landscape material layer can't find LayerInfo file.
UE - LD & Modeling - Terrain - Landscape - Sep 8, 2016Artist had problem open his level after LayerInfo file was deleted ...
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 ...
BP timelines: when converting internal curve to external, the external curve isn't used until BP is recompiled
UE - Framework - Blueprint Editor - Aug 28, 2023Blueprint timelines: when converting an internal curve to an external curve asset, the curve asset's data isn't used until the blueprint is recompiled. This is confusing as there is no indication th ...