Matinee tracks do not override Sound Notifies from AnimToPlay when using "Initial Position"

Tools - Oct 22, 2015

In the attached project, there is an animation (with a sound notify) plugged into the AnimToPlay slot. The Initial Position is set to 0.5. The matinee in the scene overrides the animations applied ...

[OPENGL]: Enable Subsurface Scattering

Tools - Jun 29, 2015

Subsurface scattering is disabled on all OpenGL platforms despite the shaders being properly translated & OpenGL platforms supporting the relevant CPU-side APIs. This also affected Metal for the WWD ...

VREditor - Vive: HMD waking up from "sleep" triggers Auto Entry to VR

UE - Editor - Workflow Systems - Jul 30, 2016

Normally this has not been as much of an issue, but recently SteamVR has dramatically decrease the time-out / "sleep" timer to something along the lines of 5-10 seconds... so the headset constantly ...

Flow indicators between sound cue links don't update unless the mouse cursor is moved

UE - Gameplay - Blueprint Editor - Jul 14, 2016

The orange flow indicator that appears won't update graphically if there is no user input so if you Play an audio cue and don't move your mouse you won't get realtime feedback of what is going in. ...

Material Function with Texture Size Texture Property will cause a Crash

UE - Graphics Features - Apr 5, 2016

By accessing the texture property for texture size will cause a crash. Attached image for material graph. Tested in: 4.10.4 Texture Size Texture Property did not exist 4.11.- CL-2927265 4.12 Dev ...

Drop down menus clip on 27" Screen iMacs

UE - Platform - Apple - Mar 17, 2017

Drop down menus clip on 27" Screen iMacs (See attached images.) Reported from a 27" iMac and tested on a 27" iMac here. Other models may be affected. *Image with Blue circled areas are from the use ...

[CrashReport] Mac crash - FMetalRenderPipelineDesc::CreatePipelineStateForBoundShaderState

UE - Rendering - Architecture - RHI - Aug 25, 2017

This is an infrequent Mac crash that has been affecting users since at least 4.15. Users have not provided any descriptions of their actions when the crash occurred. The callstack is similar to the ...

When Packaging a Blueprint Nativized Game, Child Actor BeginPlay is ignored and Parent BeginPlay is triggered instead

UE - Gameplay - Jul 5, 2018

In a Blueprint Nativized Packaged Game a child Blueprint will trigger its parent logic instead of its own when it is called. This was reported in 4.20 Preview 5 (CL-4173640). This issue has been r ...

IsTraceHandleValid with default FTraceHandles has unexpected behavior on the first frame

UE - Simulation - Physics - Sep 18, 2018

Because both FWorldAsyncTraceState's CurrentFrame and FTraceHandle are default initialized to 0, on the first frame, if a new Asnc Trace starts all default FTraceHandles will reference the same (now ...

RGB/UINT10 HDR Format not using ST.2084

UE - Rendering - Architecture - RHI - Aug 23, 2021

Specification here: [Link Removed] Which is mirrored in engine in FD3D12DynamicRHI::Init (for example): [Image Removed] However, FWindowsPlatformMisc::ChooseHDRDeviceAndColorGamut always returns ...