Unreal Engine Issues
Unreal Engine Issues
Physics Constraints do not have the same values if they are part of an 'Always Loaded' level
UE - Gameplay - Dec 3, 2014Physics Constraints do not have the same values if they are part of an 'Always Loaded' level. They will work correctly in the Persistent level and a level that is Streamed in. This becomes problem ...
Collision of child actor doesn't rotate if the parent is simulating physics
UE - Simulation - Physics - Aug 11, 2015Collision of child actor doesn't rotate if the parent is simulating physics. This was an old bug that an AnswerHub user reported back in 4.9 but now a licensee is reporting this same behavior in 4.1 ...
Hidden enumerator variables can cause the enumerator to become broken with the Select node in blueprints
UE - Gameplay - Blueprint - May 26, 2015If a user makes an enumerator in C++ and sets one of the variables to Hidden and doesn't make it the last variable of the enum, it will cause issues with the numbering of the enum when using the Sel ...
In Editor, Blueprint resources are not freed up when the Blueprint is closed
UE - Framework - Blueprint - Feb 16, 2024It appears that the preview scene used to render thumbnails is not destroyed after a thumbnail is rendered, even after the blueprint editor is closed and GC is run. Also found in Release-5.4, CL: 31 ...
ChaosCacheManager is not properly recording the state of each particle when toggling Fields and Anchor Fields in the scene.
UE - Simulation - Physics - Destruction - Oct 22, 2024ChaosCacheManager is not properly recording the state of each particle when toggling Fields and Anchor Fields in the scene. During my investigations I've noticed that ChaosCacheManager does not reco ...
Internal Compiler error when calling a custom enum in a struct from a blueprint macro
UE - Gameplay - Blueprint - Aug 6, 2015If a macro is referencing a custom enum within a struct and compiled after another output pin is removed, an internal compiler error will appear and the blueprint will not compile. ...
StructUtils plugin's `FInstancedStruct` in a CPP-defined struct in a `TArray` on an actor component defined in CPP and implemented in BP. Populating the instanced struct in an actor BP's class defaults breaks serialization of the class defaults.
UE - AI - May 30, 2025Context Instanced structs are great for holding simple data with the main advantage they have is a low memory overhead unlike instanced objects. Problem The problem is in StructUtils plugin's `FIns ...
Animating blueprint mesh duplicates uncontrollably
UE - Gameplay - Components - Apr 15, 2015When animating within a blueprint of a subclass created in c++, the animating mesh replicates itself uncontrollably. Added to .h: UPROPERTY() UBoxComponent* BoxComp; UPROPERTY() USkeletalMeshCompo ...
Enum Meta is being ignored when project is packaged
Tools - Nov 4, 2014When using UMeta on Enums, text is ignored when doing Enum to String on a packaged project. ...
[CrashReport] libUE4Editor-UnrealEd.so!FBlueprintEditorUtils::PatchNewCDOIntoLinker(UObject*, FLinkerLoad*, int, FUObjectSerializeContext*) [BlueprintEditorUtils.cpp:724]
UE - Gameplay - Blueprint - Apr 19, 2019Generated from CrashReporter ...