Crash when opening a different level after opening the preloaded level using Asset Manager

Gameplay - Jan 29, 2019

After  opens the preloaded level using Asset Manager, opening another level before unloading the level will crash. Because AssetManager holds FStreamableHandle of the level, garbage collection is no ...

iOS Remote Build fails with Date/Time set to Certain Locales

Platform - Mobile - Jan 21, 2019

Date/Time formats using commas instead of semicolons will cause iOS compile to fail. "LogPlayLevel: Error: ERROR: System.FormatException: Input string was not in a correct format." Similar Unk ...

Objects with centered pivots become Actors instead of StaticMeshActors when imported via Datasmith

Datasmith - 3dsMax - Jan 18, 2019

When selecting "affect pivot only" and choosing "center pivot" on 56 objects in 3DS Max 2019, 4 of them imported into Datasmith as Actors and not StaticMeshActors. This makes it seemingly impossible ...

Left and Right eye render Ambient Occlusion differently

Virtual Reality - Jan 18, 2019

Ambient Occlusion appears to render differently in each eye when using the oculus rift. This give the user a cross eyed feeling ...

Dedicated server crashes when running a multi-process game in standalone with the Code Editor plugin enabled

Tools - Jan 17, 2019

Attempting to run a standalone server and client using different processes will crash if the Code Editor plugin is enabled. ...

Calling UHierarchicalInstancedStaticMeshComponent::AddInstance multiple times causes crash

Tools - Foliage - Jan 16, 2019

Calling UHierarchicalInstancedStaticMeshComponent::AddInstance multiple times causes multiple BuildTrees to be created and run asynchronously at the same time. Tested in 4.21(CL - 4613538) How t ...

BuildGraph builds some tools for Win32 even if Win32 is excluded from the build

DevTools - Jan 16, 2019

When creating a local binary build of the Engine using the BuildGraph, there are several tools that are built for Win32 even if Win32 was specifically excluded from the BuildGraph (ie. -set:WithWin3 ...

Retargeting an Animation to a Skeleton with a Virtual Bone causes the Engine to crash

Anim - Animation - Jan 14, 2019

This crash occurs when trying to retarget an animation onto another skeleton with a retargeting rig that references a virtual bone. This issue could be similar to UE-37781 This issue was reported ...

UActorFactory::PostSpawnActor gets called twice when an actor blueprint class is dragged into the scene

Gameplay - Core - Jan 11, 2019

Whenever dragging and dropping an actor to the Scene, the function UActorFactory:: PostSpawnActor gets called twice. Tested in 4.20.3 (CL - 4433814), 4.21.1 (CL - 4705082), 4.22 (CL - 4708082) ...