Unreal Engine Issues

Crash in Vulkan when changing Source Texture for Rect Light

Regression: Tested in UE5/Release-5.0, no crash occurs so this is a regression No crash occurs in 5.0, but the rect light's light does not change based on the Source Texture. Rect lights function a ...

Crash occurs when disabling Show > Static Mesh in the Viewport while using Vulkan

This is a regression. Tested in: //UE5/Release-5.0 CL 20979098 - Crash did not occur. Crash occurs when disabling Show > Static Mesh in the Viewport while using Vulkan. ...

D3D validation error about resources being deleted while in use

We believe this is a bug in the D3D validation layer, rather than an actual error in our code. We're in touch with Microsoft about it, but I'll make this ticket to track the progress of that investi ...

[CrashReport]libUnrealEditor-RenderCore!FRDGEventScopeOpArray::Execute(FRDGBreadcrumbState&) [RenderGraphEvent.cpp:149]

Generated from CrashReporter Error Message:Assertion failed: !EnumHasAnyFlags(StencilAccess, AnyCopy) [File:./Runtime/VulkanRHI/Private/VulkanBarriers.cpp] [Line: 439] Only the Stencil being transi ...

HighResShot's bDumpBufferVisualizationTargets does not work on PNG output.

If the same command is executed with 4.27, multiple screenshots will be saved. ...

Objects in the Viewport in QAGame project are displayed in low resolution.

Repro rate: 3/3 Objects in the viewport in QAGame project displayed  in low resolution. Issue reproduced for precompiled and not precompiled builds. Not reproduced in newly created blueprint third ...

Crash: Device Lost after enabling SM6 within EngineTest and QAGame

This is marked as a regression as the option to set SM6 within the project setting is new.Testing on NVIDIA as we speak Issue with the same repro steps is not an issue on an NVIDIA 3000 series card ...

Opening Project with MSI Afterburner/Riva Tuner running causes GPU Crashed or D3D Device Removed crash

When creating or opening any project from Live UE5 binary, the editor will crash.   Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\Runtime\D3D12RHI\Private\D3D12Util.cpp] [Line: 859] hr faile ...

gismos is not rendered correctly in editor with vulkan on mobile preview

HiResScreenshot has incorrect masking when screenshot resolution scale does not match the viewport.

After a bit of investigation, the way to fix this would be to modify MergeMaskIntoAlpha to pass in the actual resolution scale and the requested size, and only mask the overlapping pixels. Currently ...