GPUCrash - exiting due to D3D device being lost. (Error: 0x887A0006 - 'HUNG')

Rendering - Oct 26, 2017

This Jira is for the continuation of the "D3D HUNG" crashes which originally spiked in the UE 4.14 release. Some fixes were implemented in 4.16.2 and 4.17.0 which made some improvement to the frequ ...

Code project cannot be successfully set to use CLion

Core - Feb 2, 2018

Setting a code project to use CLion as the source code accessor does not appear to work successfully. ...

Extreme hitching when using profile command (stat startfile) + other stat commands

Core - Apr 19, 2018

Running the "stat startfile" command in a 4.19 project causes constant editor hitching. Running the same command in a 4.18 project does not produce any hitching by comparison. ...

Crash When Opening Static Mesh After Enabling Forward Shading And Disabling "Support Stationary Skylight"

Rendering - Apr 17, 2017

After enabling forward shading and disabling "Support Stationary Skylight" opening a static mesh in the static mesh editor will crash the engine. REGRESSION? Yes Crash Did NOT occur in 4.15.1 CL ...

Copying/pasting an element in an array of EditInlineNew objects results in a reference to the original element being created instead of a reference to a new copy of that element.

Tools - Aug 20, 2015

When duplicating an element of an array of EditInlineNew UObjects, a reference to the duplicated element is created instead of creating a new UObject that duplicates the initial element's properties ...

Blueprint's location reset to 0, 0, 0 after being detached in a network environment

Networking - Apr 24, 2017

Attaching / Detaching a blueprint actor to a player in a network environment causes location errors when the detach occurs. Even without the attach events being replicated or the blueprint's movemen ...

[CrashReport] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHICreateUniformBuffer() [d3d11uniformbuffer.cpp:218]

Rendering - Jun 12, 2018

No user comments in crash group 208 check(Layout.ResourceOffsets.Num() == NumResources); 209 210 for (int32 i = 0; i < NumResources; ++i) 211 { 212 ...

Memory Leak In PageAllocator When Packaged

Tools - Landscape - Aug 29, 2018

There is a Memory leak in PageAllocator when packaged. The leak can be stopped if "Landscape.Static" is used in console. Unable to test 4.19 since the provided project was 4.20, but Issue is reporte ...

Importing a Landscape Layer with World Composition Enabled Causes Memory Leak

Tools - Landscape - Sep 18, 2018

When importing layer information to a landscape the engine will freeze and consume all available memory. Unable to test in 4.19 due to provided project being made in 4.20. I have attached a log from ...

Meshes simulating physics cannot roll smoothly across multiple connected meshes

Physics - Jul 30, 2018

A user has reported a physics regression from 4.19 to 4.20 where attempting to roll a static mesh down a slope made of multiple meshes no longer results in a smooth roll. The static mesh will skip a ...