Unreal Engine Issues

Interchange: racing condition when InterchangeWorker.exe is not built

Crash during cloth initializations while the debug materials are being loaded.

The FGCObject::AddReferencedObjects() can be called during the LoadObject for the cloth debug materials, while the material object pointers are not yet initiliazed, causing the editor to crash. ...

Meta “AllowClasses” doesn’t filter in TArray using class

This occurred when we use a class and variable TSubclassOf<UObject>, TObjectPtr<UClass>, TSoftClassPtr<UObject>. [Image Removed] ...

Lumen Leaking and Reflection Flickering

Hair Culled but still evaluated

Hair visibility override issues

The Blueprint compiler is not consistent with UHT when generating DefaultToInstanced variables

UnrealHeaderTool and the Blueprint compiler generate inconsistent metadata for object reference variables whose underlying class type includes 'DefaultToInstanced' metadata. UnrealHeaderTool-genera ...

Gameplay Cue Notify Paths in Game Feature Modules don’t work when written in the ini file, only when added via AddGameplayCueNotifyPath()

The gameplay cue may work fine the first time. If this is the case, then relaunch the editor. It should then be broken, as the tag is no longer loaded after its creation. ...

Sequencer Curves View: Fourier Transform Curve Filter stopped working?

The Fourier Transform Curve Filter seems to have broke in 5.3+ [Image Removed] ...

Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent

In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...