Unreal Engine Issues

RVT that is set up following the Quick Start Guide shows a flat black texture

A user has reported on salesforce that their RVT material is returning black. After following the publicly available Epic Quick Start guide online I encountered the same issue. The ticket was repor ...

New VR-Basic level triggers Metal validation layer assertion

This was discovered externally and reported on UDN here: https://udn.unrealengine.com/questions/563268/mac-editor-crash-when-disable-ambient-occlusion.html ...

Mouse cursor position is locked to center of screen when bShowMouseCursor is false

When you set bShowMouseCursor to false in a Standalone or packaged game while Default Viewport Mouse Lock Mode is set to either Always Lock or Lock on Capture, the cursor will become locked in place ...

Sequencer animation stutter when using Run Dedicated Server causes character to drift

Sequencer animation stutter when using Run Dedicated Server causes character to drift. This doesn't happen when "Run Dedicated Server" is disabled. Licensee Description: We are having an issue wit ...

Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)

Packaging for IOS fails using SSH from a Windows Binary Build

Errors in the log: * Undefined symbols for architecture arm64: * "___isPlatformVersionAtLeast", referenced from: * FMetalResourceHeap::CreateBuffer(unsigned int, unsigned int, unsigned int, mtlpp ...

HLODs appear dark/near black when built for very large geometry with Virtual Textures enabled

Building HLODs for a very large landscape with Virtual Textures enabled results in the built HLODs being very dark for the most part. Building the same large landscape's HLODs with Virtual Textures ...

Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization

In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...

NVIDIA 5080 GPU Crash when launching City Sample with DX12

UPDATE This issue no longer reproduces on driver versions 580.88 and higher. City Sample game crashes immediately upon opening with a NVIDIA 5080 with the latest drivers as well as some previous dr ...

Engine crashes when trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph

When trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph the engine crashes. If the blueprint that is copied into has a GameplayTag variable with the sa ...