Cannot set background color for UI Domain material preview

UE - Editor - UI Systems - UMG - Dec 18, 2023

CSM Shadows disappearing at larger coordinates with different FOVs

UE - Graphics Features - Shadows - Apr 5, 2024

Cascaded shadows disappear at some FOVs when far from the world origin. This behavior was not present in 5.2. Also found in CL: 32690246 in Release-5.4 ...

Enhanced Input Pressed Trigger firing twice

UE - Gameplay - Input - Apr 14, 2024

GetTriggerEvent() in a function bound to an enhanced input action in C++, returns "Triggered" when bound to the "Started" trigger event. ...

Crash during garbage collection when container UPROPERTIES specify raw interface pointer element types without TScriptInterface wrapper

UE - Foundation - Cpp Tools - UnrealHeaderTool - Oct 1, 2024

When a UPROPERTY() TMap or TArray has raw interface pointers as element type, the garbage collector tries to handle them and crashes. For raw interface pointers without a container, UHT generates a ...

Foliage HLODs don't respect "Disallow Nanite"

UE - World Creation - Worldbuilding Tools - HLOD - Jan 15, 2025

We have a level with foliage meshes that has been placed via the foliage system. We want to place these into HLOD Layers so that we can disable nanite, and thus enabling the imposter LODs at a dista ...

VulkanStagingBuffers stat continually to grows.

UE - Platform - Mobile - Oct 24, 2025

On Android phones, VulkanStagingBuffers continually grows when the scene is static. From looking at FStagingManager, it appears the VulkanStagingBuffers atat is only updated on buffer acquisition, ...

PlayerCollision visualization incorrect on LandscapeSplineMesh when Nanite is enabled

UE - Graphics Features - Nanite - Dec 3, 2025

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 ...

Trigger Volume Blocks First-Person Template Projectile

UE - Simulation - Physics - Nov 2, 2015

When playing in editor, if you fire your weapon at a trigger volume, the projectiles will bounce off of the volume, regardless of the fact that the collision is set to Query Only. This collision als ...

Opening the editor with -opengl4 causes the viewport camera to go black

UE - Platform - Linux - Apr 14, 2015

If the -opengl4 command is used while launching the editor it will cause the viewport to go black if something in the level is selected or while using RMB to look around the level. ...

Enumeration selections within structs do not properly populate within data tables

Tools - Dec 1, 2015

The first selection of Enums within a struct array do not properly pouplate the table within a datatable (see attached image datatableEnum1). Any other selection populates the datatable, however it ...