Unreal Engine Issues

PSO Creation hangs on task in Shipping build

Running with `r.AsyncPipelineCompile=0` causes the issue not to happen. It fails to open about 4 times out of 5. No such problem in development build., it always succeeds. We noticed that if we de ...

FBoneContainer::MakeMeshPoseIndex crash (out-of-bounds array)

UPoseAsset::SetBasePoseName() always sets INDEX_NONE

UPoseAsset::SetBasePoseName() does not correctly set the BasePoseIndex when a valid pose name is provided. Regardless of input, the pose defaults back to ReferencePose. Upon inspection of the implem ...

StreamableManager does not apply CoreRedirects to loaded paths

When loading soft object paths directly, it applies any important CoreRedirects by calling the function FixupCoreRedirects if the initial load attempt fails. In the repro steps, this will apply this ...

Attempting to open a certain blueprint (NewPickup) crashes project

Acquired a blueprint from a user cannot open it. It crashes project when opening the blueprint "NewPickup" ...

[CrashReport] UE4Editor_ImageCore!CopyImage() [imagecore.cpp:144]

No user comments on crash group  135 case ERawImageFormat::BGRA8: 136 { 137 const FColor* SrcColors = SrcImage.AsBGRA8(); 138 for (int32 TexelIndex = 0 ...

[CrashReport] FIntroTutorials::AnalyticsEventNameFromTutorial()

This is a common crash that appears to have started in the 4.16.1 hotfix, but has occurred with more frequency in 4.16.2. User DescriptionsAfter the blueprint tutorial, I pressed "play", pressed ES ...

BP-implemented BT decorators end up thinking they're not on active branch

This issue makes BP BT decorators not being able to run condition checking every tick. The core issue is here: bool UBTDecorator_BlueprintBase::GetShouldAbort(UBehaviorTreeComponent& OwnerComp) co ...

[CrashReport] UE4Editor_SlateCore!FSlateElementBatcher::AddElements() [elementbatcher.cpp:52]

This is an infrequent crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Based on affected project names, this may be a VR is ...

Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly

At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...