Unreal Engine Issues

Selecting the Clean or Rebuild options for a project in Visual Studio does not complete successfully

Using the Clean option on a 4.15 project in Visual Studio currently fails with Visual Studio stating that it cannot find the ReadyToClean batch label. Selecting the Rebuild option shows the same mes ...

Crash when launching a packaged project where a code class gets a reference to a Blueprint widget that contains an instance of a Blueprint struct

A packaged project will crash on launch if a code class uses ConstructorHelpers::FClassFinder to get a reference to a Blueprint Widget that contains a Blueprint struct variable. Disabling EDL in the ...

Widget components set as IsVariable have non-functional settings/variables

There is an issue occurring where Widget components set as IsVariable have non-functional settings/variables. This issue occurs with multiple widget components. This does not appear to be a regressi ...

Certain materials are overly bright with Ray Traced Global Illumination denoiser

Ray Traced Global Illumination is causing some materials to glow extremely bright Disabling r.raytracing.globalillumination.denoiser fixes the issue In 4.22 preview 5 binary (5365847) the result i ...

Arrays of Soft Object local variables are not captured for reference graph

This bug comes from https://udn.unrealengine.com/questions/492861/view.html and is a very similar problem to [Link Removed] The issue is that the code that harvests soft object references stored in ...

PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled

From licensee: I’ve found an issue with the visualization of PlayerCollisions when using LandscapeSplineMesh with a mesh that has Nanite enabled. The Chaos collisions shown in the Chaos Visual Debu ...

Changing the Curve Asset in a Material Instance That Uses a Material Layer Crashes the Editor

Changing the Curve Asset in a Material Instance That Uses a Material Layer Crashes the Editor. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 5974510 ...

Disabling LQ lightmaps causes crash on mobile preview

Landscape Visibility Tool crashes editor

Editor crashes when landscape visibility tool is used on landscape. Frequency: 2/2 Crash Reporter: [Link Removed] ...

Crash when changing the name of a variable within in a struct that's being used by a Control Rig Blueprint

It seems that changing the name of a variable inside a struct that is being used by a Control Rig variable causes a crash. Additionally, after making the change and recompiling the Control Rig bluep ...