Unreal Engine Issues
Unreal Engine Issues
'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 ...
Creating TArray of components does not allow component elements to be edited in blueprints
UE - Gameplay - Blueprint - Mar 8, 2016When an array is used to declare actor components, the component elements that make up the array cannot be edited inside blueprints. ...
Action event in the blueprint graph leads to state dirty.
UE - Gameplay - Blueprint - Aug 9, 2017BP state get dirty if the BP graph have action input event. Regression: Yes, it is not reproduced in 4.16.3 This issue is not related to Blueprint Compilation Manager. ...
Virtualized Silent Sounds "Pop" When Played With New Mixer
UE - Audio - Sep 27, 2017-Could not reproduce and only happens in the project linked below -Tested in 4.16 and Preview 4.18 and this can not be heard -Does not look like the .ini file is the cause of the issue -Other soun ...
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 ...
Unable to use OpenXR with non-Oculus Android platforms
UE - Platform - XR - Dec 1, 2022From Licensee: In OpenXRHMDModule:473 (UE5.0) or OpenXRHMDModule:497 (UE5.1) the engine is checking if the app is packaged for Oculus Mobile, if it isn't the case the function returns false and the ...