Unreal Engine Issues
Unreal Engine Issues
Crashes when attempting to use an Instanced Struct inside Control Rig / Rig VM
UE - Anim - Rigging - Control Rig - Mar 17, 2025Currently, the Control Rig Editor allows the user to use the "Instanced Struct" type, for example for a variable or function input/output. However, this type does not seem to be properly supported ( ...
Nested code component causes ensure in blueprint's child blueprint
UE - Gameplay - Blueprint - Aug 25, 2017When a component class (base) contains a component property (Nested) adding the base component to a blueprint and changing the position of the component will update the base and nested components as ...
Evaluate ClampedPow material function
UE - Graphics Features - Mar 16, 2017ClampedPow seems to have been added as a way to tackle common compile warnings and edge cases (particularly NaNs), but the code shouldn't be calling both an abs() then a max(). This causes negative ...
Unexpected Phat constraint skeleton tree search behavior
UE - Simulation - Physics - Nov 14, 2019The skeleton tree search does not search for constraints based off of their full displayed name in the tree. Only their second bone name is used when filtering (despite portions of their full name s ...
Data Asset Deserialization crash after upgrading 4.19.2 to 421.1
UE - Foundation - Core - Feb 7, 2019The User has provided an extensive log of their code base setup, and the process leading up to when the Assert occurs. "Our game mode & player state FSM are setup in a data driven manor using UDa ...
Materials with a custom node with a Struct that has a function fails to compile for GLSL (Android) and uses a default material
UE - Graphics Features - Apr 29, 2019A user has reported that Materials that contain a custom HLSL node that has a Struct with a function declared inside of it results in the material failing to compile for GLSL, causing the Material t ...
Crashes when applying material on objects after changing UV mapping parameters with Lumen enabled.
TM - Core - Jun 20, 2024Info from the user: "This is super basic, only just started to build the scene. I have modeled in Vectorworks 2024 Architect and imported it into Twinmotion via the export and not the live link. The ...
Invalidation panels can retain stale hittest data when caching is disabled/enabled
UE - Editor - UI Systems - Slate - Aug 20, 2024Changes to the hit test grid of an invalidation panel while caching is disabled won't be respected when caching is reenabled. This can cause interactive widgets such as buttons who were set to colla ...
When 1 AnimSequence asset is used for multiple SeuqnecePlayer, the override by AnimGraphOverrides affects other than the specified SequencePlayer.
UE - Anim - Runtime - Anim Blueprints - Jun 30, 2022If you use the same AnimSequence in multiple SequencePlayers in Base AnimBP and replace asset of one of SequencePlayers by AssetOverride in Child AnimBP, the result will be reflected in the other Se ...
When show propertymatrix and delete target actor, the editor crash
Tools - Jul 11, 2017It looks like it is null reference in propertymatrix. It always occurs when I execute the reproduction procedure. ...