Mixed Reality HMD does not appear to respect the Start in VR boolean in a packaged game

UE - Platform - XR - Mar 13, 2019

When the Windows Mixed reality plugin is enabled and a Mixed Reality device is hooked up, packaged games start in VR (regardless of if start in VR is enabled). ...

Using Open Source to open a StreamingMediaSource on Android causes a slight freeze on some devices

Media Framework - Mar 11, 2019

Calling Open Source to open a Streaming Media Source causes a freeze to occur on Android when it is called. This does not happen on all devices. When testing this issue, I reproduced this issue on a ...

Client loses input after doubling the amount of physics objects in the level

UE - Networking - Mar 11, 2019

After doubling the number of physics objects in the level the client loses input/ignores input ...

Inappropriate description of tool tip when bone is selected in skeleton tree

UE - Anim - Runtime - Mar 11, 2019

According to the report from Licensee, this is because it is displayed when the child's bone has Weight, which is a cause of misunderstanding. ...

Disappearing components in Level Sequencer Spawnable Camera

UE - Anim - Sequencer - Mar 11, 2019

I believe this is similar problem to this UDN reported bug. https://udn.unrealengine.com/questions/438893/view.html It can be avoided by removing the comments in LevelSeuqnceActorSpawner.cpp UEng ...

StaticMesh Lod Sections use wrong materials after cleaning DDC and regerated from RawMesh

UE - Editor - Content Pipeline - Import and Export - Mar 9, 2019

Null access to Unpossessed controller with seamless travel

UE - Gameplay - Mar 9, 2019

The unpossessd controller will not be removed from UWorld::ControllerList unless destroyed. This causes null access to the ControllerList when GC occurs during seamless travel execution. The unposse ...

Rounding errors are present in FJsonValue::TryGetNumber(int64&) and FMath::RoundHalfFromZero()

UE - Foundation - Core - Mar 8, 2019

A licensee reported a bug in rounding of a call to FJsonValue::TryGetNumber(int64&) with large values.  In investigating this, it appears that equivalent problems also exist in FMath:: rounding func ...

Assertion failed in DX12 RHI after instancing actors

UE - Rendering Architecture - RHI - Mar 8, 2019

It doesn't happen with the DX11 RHI ...

MDL imported from Substance Source with Datasmith causes a crash

UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019

MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...