Unreal Engine Issues

Material expression called Compiler->TextureParameter() without implementing UMaterialExpression::GetReferencedTexture properly

when trying to replace a Material Function instance, with another instance, as the base color of a material within the Material Graph, the editor crashes with the following error:Assertion failed: ...

Get wrong primitive scene data on mobile preview with GPUScene enabled

The console command bugscreenshot doesn't work correctly in stand alone or packaged games

The console command bugscreenshot doesn't work correctly in stand alone or packaged games. It screenshots the UI and leaves the rest transparent. This is different behavior from PIE, New PIE, or jus ...

Moving a water body causes engine to drop fps and spike ms

Moving a water body lowers performance on the engine. The fps drop from 120 to 30 and ms spike from 8 to 30. This issue occurs in 5.0 Binary and 4.27 Binary on Windows. On Mac, FPS drop and ms spike ...

"Assign" node can cause a crash when placed in a graph

This may only happen with upgraded projects that went from 4.27 up to 5.0.1 ...

Assertion thrown while creating a Geometry Collection with Hardware Raytracing enabled along side r.RayTracing.Geometry.GeometryCollection 1

A raytracing project with hardware raytracing enabled and r.RayTracing.Geometry.GeometryCollection set to 1 triggers a crash when trying to create a geometry collection. ...

Merging static mesh actors results in static mesh sockets getting lost

Licensee reports that merging two static meshes results in any sockets disappearing in the resultant merged mesh. "essentially I want to "hard code" the materials and sockets to the static meshes s ...

Artifact when rendering high-resolution images with Lumen and Movie Render Queue

Artifacts when using Lumen at 8K equivalent resolution and rendering with MRQ. 8K equivalent, because the same issue occurs when the resolution is set to 4K and the Screen Percentage is set to 200. ...

geometry script AppendSimpleSweptPolygon can crash if called with empty path

geometry script "Append Simple Swept Polygon" crashes if called w/ an empty path (but non-empty cross section polygon) ...

Ensure and Assertion thrown while attempting to change Float value on a Sky Light using the Set Editor Property node

This is a regression. Assertion thrown while attempting to change a Float value on a Sky Light component using the Set Editor Property node. Different property values can trigger this assertion bes ...