Volumetric Clouds High Quality Aerial Perspective Issue

UE - Rendering Architecture - Oct 19, 2023

There is a workaround to set r.VolumetricRenderTarget.Mode=1. The lines appear to be coming from the temporal component of the Volumetric Clouds. Each frame, the lines are merged in from the previou ...

Atmosphere Sunlight shafts, artifacts, for both cascaded and virtual shadow maps.

UE - Rendering Architecture - Feb 5, 2024

Very large objects casting dynamic shadows on the sky atmosphere can lead to flickering (cascaded shadow maps) or square patterns (virtual shadow maps). ...

Crazy camera when zooming in/out the Sequencer

UE - Anim - Sequencer - Mar 22, 2024

If you add Static Mesh (cube) in this Level Sequence and click on it in Sequencer, you can observe the Spline Path that the cube is following is changing its shape when keys in Sequencer are zoomed ...

Opening a Level inside the ReferenceViewer does not Prompt the Save window if the Level is dirty.

UE - Editor - Applied Usability - Apr 15, 2024

If you right click on a level node in the reference viewer and choose edit, it will bypass prompting you to save unsaved changes in your current level, silently discarding all unsaved work. ...

Physics Linear Velocity functions from UPrimitiveComponent always return (0,0,0) velocity

UE - Simulation - Physics - Jul 30, 2024

In Unreal Engine version 5.4, all Physics Linear Velocity functions inside PrimitiveComponent class are returning always a velocity of (0,0,0), even if the Body Instances are moving. This was workin ...

Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1

UE - Rendering Architecture - Shaders - Feb 28, 2025

Shader symbols are not generated for the Windows platform. Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine ...

Missing binding object for component track in level sequence

UE - Anim - Sequencer - Mar 13, 2025

This issue occurs when clicking on the Rebind Possesable References action in a Level Sequence editor. The component reference appears missing and won't work anymore. It is worth noting that when ...

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

UE - Rendering Architecture - Materials - Aug 1, 2025

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 ...

Dragging Marquee in Orthographic Views results in Selecting Unintended Objects

Tools - Mar 17, 2015

In an orthographic view, dragging the marquee tool to select a group of objects will often result in other objects being selected outside the selection area. ...

Ragdoll Physics do not Function Properly on a Mirrored Skeletal Mesh

UE - Simulation - Physics - Dec 1, 2015

Selecting the default character/skeletal mesh (or any skeletal mesh) in the viewport, right-clicking and transforming it so it mirrors on the X,Y, or Z axis will cause the physics to act erratically ...