[CrashReport]UE4Editor-AudioMixerXAudio2!Audio::FMixerPlatformXAudio2::OpenAudioStream(Audio::FAudioMixerOpenStreamParams const &) [AudioMixerPlatformXAudio2.cpp:951]

Audio - Jul 15, 2021

This issue is occurring on startup for users. This could be potentially related to a recent Windows Update. ...

Cannot select child anim BPs for use in linked anim layers

UE - Anim - Runtime - Jul 15, 2021

From UDN: [Link Removed] Unable to set a Child ABP with inherited interface to a Linked Animation Layer Instance Class. I have a ABP_Biped which is our main ABP. I have the locomotion (idle+straf ...

If enable Preview Slot of non-default slot in AnimMontage, AnimNotify of AnimationSequence does not run.

UE - Anim - Runtime - Jul 15, 2021

The AnimSingleNodeInstance used in the AnimMontage preview does not consider multiple Slots. The following is a correction code. void UAnimSingleNodeInstance::SetAnimationAsset(class UAnimationAsse ...

Oculus Quest Link with OpenXR fires action events multiple times when multiple action events are bound to the same key

UE - Platform - XR - Jul 14, 2021

From a developer: If the same key is mapped to N action events all the mapped events fire N times. This issue only exists with the OpenXR plugin enabled and does not occur for any keyboard/mouse i ...

Motion Blur Bug on 1st frame of camera change with sequence

UE - Rendering - Jul 14, 2021

Renderdoc capture of the blurry frame is here - [Link Removed] It should have symbols attached to it but let me know if not and I can reupload (Jon Cain) It's coming from the motion blur pass but ...

GAME option of GenerateProjectFiles.bat does NOT work properly

UE - Foundation - DevTools - UnrealBuildTool - Jul 13, 2021

if using -GAME option of GenerateProjectFiles.bat, it does not work correctly by the following codes.protected void AddProjectsForAllModules( List<FileReference> AllGames, Dictionary<FileReference, ...

Mobile Previewer: Content Scale Factor 0 Issues

UE - Platform - Mobile - Jul 13, 2021

There are several reported issues with Save Zones displays in the mobile previewer when the Mobile Content Scale Factor is set to 0.  When MobileContentScaleFactor is set to 0 a couple things hap ...

SingleLayerWater is rendering brighter shallow water with fog

UE - Rendering - Jul 12, 2021

Shallow water areas in scenes with exponential height fog will be brighter than they should be. Possibly due to the fog being applied twice in the SingleLayerWater shading model. ...

Guid of Actor Reference does NOT replace in UMovieSceneActorReferenceSection::OnBindingsUpdated

Anim - Sequencer - Jul 6, 2021

In UMovieSceneActorReferenceSection::OnBindingsUpdated, Key isn't reference, so the GUID isn't replaced.for (FMovieSceneActorReferenceKey Key : ActorReferenceData.GetData().GetValues()) { if (O ...

Cracks in polygons in BSP Optimize

UE - LD & Art - Modeling Tools - BSP - Jul 1, 2021

This problem also occurs when the Create Convex Polygons checkbox is checked in the Pen tool. ...