Unreal Engine Issues

Scrollbox under multiple retainerboxes doesn’t scroll correctly with PIE

When the scrollbox as the child of multiple retainerboxes, the scroll isn't smoothing. It can see issue with PIE only. If it run with standalone (or package build) is fine. In SScrollBar::ExecuteO ...

Crash when using Get Start/End Frame (Seconds) node with MovieSceneSection have no opened bound

If use Get Start/End Frame (Seconds) with GetStartFrame has a section isBounded is False, eg 3DTransformSection, editor will be crashed. Specifically, a following code occur crash. inline FFrame ...

Get D3D12 RHI compiling on strict mode

Animation Blueprint Classes are Uncastable

It appears that the Anim Instance class is no longer accessible. As a result, no animation blueprints made are accessible via blueprints - regardless of whether or not the skeletal mesh actually use ...

"Move selected actors to level" will move all foliage currently opened when a AInstancedFoliageActor is selected

From UDN https://udn.unrealengine.com/questions/518184/move-selected-actors-to-level-will-move-all-foliag.htmlWe've noticed a very dangerous behavior when moving actors from one level to another. If ...

Crash occur when using AddSpawnableFromClass with BlueprintGeneratedClass specified

BlueprintGeneratedClass is not based UBleupint. So the following code is failed. bool UActorFactoryBlueprint::PreSpawnActor( UObject* Asset, FTransform& InOutLocation) { UBlueprint* Blueprint = ...

USkinnedMeshComponent::PredictedLODLevel can be set below MinLOD

 Within USkinnedMeshComponent::UpdateLODStatus_Internal, if the USkinnedMeshComponent does not yet have a MeshObject, MaxLODIndex will be left as 0 and as a result PredictedLODLevel will be set to 0 ...

Niagara effects do not display as expected VR when using instance stereo

When using instance stereo it appears that Niagara particles do not render as expected in VR ...

[CrashReport] UE4Editor-Renderer!FVirtualTextureSystem::FeedbackAnalysisTask(FFeedbackAnalysisParameters const &) [VirtualTextureSystem.cpp:776]

Generated from CrashReporter ...

Potential Memory Leak with Disaster Recovery Plugin

Enabling the disaster recovery plugin causes a memory leak when importing and editing a large amount of textures. This can result in either a system lockup or a crash. ...