Unreal Engine Issues

Engine Crash when Running a Screenshot Functional Test

Running a Screenshot Functional test, is causing an engine crash. By attaching a debugger to it, AScreenshotFunctionalTestBase::PrepareForScreenshot() is reached and GEngine->GameViewport is null, ...

Setting FActorSpawnParameters::bRemoteOwned causes inconsistent behavior when spawning actors

If FActorSpawnParameters::bRemoteOwned is set to true, calling SpawnActor with this spawn param on begin play has different behavior than calling the SpawnActor elsewhere during runtime. If using n ...

FLevelInstanceActorGuid::GetGuid issue in Multiplayer

I am doing some runtime manipulation of data layers and I am running into a check failure due to a zero guid in FLevelInstanceActorGuid::GetGuid during multiplayer testing. When I debug FLevelInsta ...

Crash upon opening Windows 64 bit development build with only DX10 RHI enabled

When packaging with only support for DirectX10 RHI, the editor will crash after hitting "OK" on the window that mentions that the Global Shader Cache file is missing. This was encountered while run ...

BUG IN CLIENT OF LIBDISPATCH: crash on KeyPress down in WebBrowser

FCEFWebBrowserWindow::OnKeyDown() InternalCefBrowser->GetHost()->SendKeyEvent(KeyEvent); is processed on the UE4 GameThread, inside the Chromium Embedded Framework (CEF) it appears to call a syst ...

Android Projects packaged for arm64 crash on device.

This issue was discovered while smoke testing Release 4.13 for Preview 2. ...

Crash when Removing and adding players on client

Crash when Removing and adding players on client. If the user adds a player to the client and then removes that player and then adds another one. This appears to crash the editor ...

Crash related to Vertex Painting - MeshPaint!CastChecked<AActor,UObject>()

This crash was reported on the UDN. Upon further investigation it has been experienced by a handful of different users throughout 4.11 and 4.12. JIRA logged for tracking despite unknown repro steps ...

Crash when changing Animation Segment Playrate in Animation Composite

See [Link Removed] ...

Vulkan crashes on Adreno Galaxy S7