Unreal Engine Issues

ES2 Fallback Fails on Nougat Devices that do not support Vulkan

Discovered this while doing RC candidate testing for 4.13 Works fine in all other use cases: Nougat devices that support Vulkan Marshmallow devices that support Vulkan Marshmallow devices that don' ...

Low res textures (MobileContentScaleFactor) on iPad Pro 10.5"

There's no device profile to set MobileContentScaleFactor for iPadPro 10.5". It picks up other rendering settings properly from the iPadPro family, but this doesn't set MobileContentScaleFactor. T ...

The "Meshes" value of the LLM for dx11 is considerably larger than that for dx12.

We hope that the difference in GraphicsRHI will not cause such a big difference, but we need to make sure that there are no measurement omissions in the case of DX12.  ...

ParticlePosition doesn't use Previous values

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

Utility functions in UEdGraph_ReferenceViewer are no longer exposed

A number of utility functions are provided in UEdGraph_ReferenceViewer for building menu extenders. This class was originally included in the engine as part of the ReferenceViewer module, but was re ...

Missing DirectX redist on clean machine

Running a packaged UE4 game with app-local dependencies on a clean Windows machine will fail due to missing XInput DLLs. These components are not distributed with Windows by default any more. We sho ...

Mover MoveDirectionIntent can be 0 due to interpolation

If two states have MoveDirectionIntent vectors that are opposite to each other, interpolating between these states can result in MoveDirectionIntent being 0. This may cause issues for animation blue ...

Blueprint inherited from StaticMeshActor will fail to compile if StaticMesh is NULL

Some developers reporting incorrect Preview in VR resolution for Steam VR

VR Preview Window is the wrong resolution, just showing the top left portion of the entire view. Somewhat similar symptoms to -[Link Removed]-, not exactly the same though.   This issue has not be ...

PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected crashes this project

This user's project crashes on PIE after the Game Instance's parent has a wire disconnected, compiled, then reconnected. Possibly related to [Link Removed], but the call stack is slightly different. ...