Unreal Engine Issues

Sample game headers aren't set up in an extensible way

Our sample games all seem to use the semi-deprecated Classes folder for their headers, and many of these headers omit a #pragma once (or other header guard). This means that they don't play nicely ...

Flickering Meshes after removing HISM instances

Removing HISMs in a packaged project causes meshes to remain and flicker in a packaged project. (Inclusive Nativization is enabled in test project, but issue occurs with nativization disabled as we ...

Crash when changing parent of Material Instance with Layered Materials and viewing Layer Parameters

Reparenting a MaterialInstance that uses Material Layers to another instance with a different layer configuration can cause the editor to crash when opening the Layer Parameters tab. This appears to ...

Skeletons don't cook in a deterministic way

The "Rifle_Skeleton" asset in ShooterGame doesn't cook deterministically, and as such is always included in patches. Possible regression of [Link Removed] ...

Pasting a material graph breaks connection to any material function nodes.

Pasting a material graph breaks connection to any material function nodes. ...

Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE

When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...

GPU particles are not showing on Metal / iOS

If you place a GPU particle into your project and deploy to an iOS device that supports metal, the asset will not show correctly on the device. I have attached the assets that were used to this rep ...

Compile error when opening a project on child blueprint calling parent blueprint event

child blueprints calling functions from parent blueprints generate compile errors upon opening project and pressing compile within the child blueprint. Workaround: Open parent blueprint and comp ...

Bloom artifact showing in splitscreen settings

There is a bloom artifact at the top of the bottom player's screen. ...

Twinmotion freezes after starting in VR mode with the HTC Vive Pro 2 headset.