Unreal Engine Issues
Unreal Engine Issues
UGeometryCollectionComponent::EventDispatcher gets registered for events twice what can result in duplicate collision events being fired
UE - Simulation - Visual - Sep 18, 2024UGeometryCollectionComponent::EventDispatcher gets registered for events twice, once in UGeometryCollectionComponent::RegisterForEvents() and again in UChaosGameplayEventDispatcher::OnRegister(). Th ...
Cut & Paste in Sequencer breaks with Attach track
UE - Anim - Sequencer - Jan 15, 2025Cutting two tracks in sequencer, which one is attached to another one, and pasting it break with Attach track. By this operation, Attack track loses its binding object. Copying such tracks and paste ...
'Malformed sequence hierarchy' ensure hit after modifying sub-sequence tracks
UE - Anim - Sequencer - Sep 5, 2025It's possible for there to be multiple instances of the same sequence in the evaluation states cache if the same sequence is used in multiple sub-sections. Caches are never removed from the evaluat ...
Local class variables do not correctly populate
UE - Gameplay - Blueprint - Dec 2, 2015Local class type variables do not correctly populate with default value information. Variables of a class type populate with default value information normally. ...
Inside a BP Interface, changing a Function output to an input will cause a compile error in the reference bp
UE - Gameplay - Blueprint - Apr 6, 2015Inside a BP Interface, changing a Function output to an input will cause a compile error in the reference bp. [Error] "Graph named 'NewFunction_0' already exists in 'bpActor'. Another one cannot be ...
Calling SetupAttachment/AttachToComponent with 'this' as the parent inside a USceneComponent subtype's C++ ctor for nested component subobjects will result in all instances of the nested default subobject trying to attach to the CDO at registration time.
UE - Gameplay - Nov 16, 2016This occurs because the 'AttachParent' property is a UPROPERTY, and as a result when we create a new instance of a USceneComponent subtype, any USceneComponent subtypes it owns are treated as instan ...
Incorrect restitution behavior for physical material set to 1 whereby momentum is gained during the simulation
UE - Simulation - Physics - Mar 24, 2015Setting a restitution of 1 for a ground material and a restitution of 1 for a ball that bounces on the ground should keep the ball bouncing at the same height consecutively. Over the course of time ...
Construct object fails to assign a value when using the level blueprint - ConstructObject node issue
UE - Gameplay - Blueprint Compiler - Feb 28, 2018https://udn.unrealengine.com/questions/419239/uk2node-genericcreateobject-compile-issue.html ...
"On List Selection Changed" Retrieves The Wrong Item When "Set Item Selection" is used.
UE - Editor - UI Systems - Jan 8, 2020When a list view item in UMG is selected using "Set Item Selection" it will get the item of the first entry in the list or the last entry manually selected by the user. The correct item display nam ...
Search in Blueprint can encounter a deadlock condition when the window is closed before the search finishes and an FText lookup is pending
UE - Gameplay - Blueprint Editor - Jun 19, 2024When a running search in all blueprints is closed, it may prevent an AsyncTask used to return the look up FText's from StringTables from running on the game thread, leading to a deadlock. When the ...