HoloLens auto-enabling as a supported platform in 5.1

UE - Platform - XR - Mar 30, 2023

https://udn.unrealengine.com/s/case/5004z00001n9MUWAA2/hololens-cannot-be-permanently-disabled-as-a-target-platform?fromCase=1 They disable hololens as a supported target platform, but it is enab ...

RayTracing Final Gather is not working in UE 5.1

UE - Graphics Features - Ray Tracing - Apr 12, 2023

Further Comments: Customer is using the deprecated ray traced mode. ...

DrawDebug elements on screen affect aspect ratio letterboxing

UE - Rendering Architecture - Nov 1, 2023

During gameplay when the view target camera's aspect ratio is not exactly the viewport's aspect ratio, the presence of rendered debug draw elements (DrawDebugArrow, etc) makes the viewport's rendere ...

Mutable constant texture variable with ClipUV mask only works with new experimental dynamic variable is connected as well

UE - Anim - Mutable - Sep 22, 2025

We are attempting to use Mutable in 5.6.1 and have encountered an issue which we are not sure how to resolve. The issue occurs when using the ClipWithUVMask node. In short we have a customizable o ...

Assigning a static mesh to a Mutable Clip Mesh With Mesh Node can crash the editor

UE - Anim - Mutable - Jul 4, 2025

Context: The Mutable plugin has a modifier node called Clip Mesh With Mesh that allows Static Mesh modifiers to be assigned as the clip mesh. Under certain circumstances, an assert can be triggered ...

Ensure triggered in FBoundsCacheElement::GetValue when adding ISM instances in Construction Script

UE - AI - Oct 8, 2025

An ensure is triggered in FBoundsCacheElement::GetValue when adding instances to an InstancedStaticMeshComponent inside a Blueprint’s Construction Script. This occurs when the ISM component is navig ...

Skeletal Meshes keep reference to unused Material IDs

UE - Editor - Content Pipeline - Import and Export - Sep 7, 2016

When importing a FBX with multiple materials and some of them are unused from their setup, they will still be referenced by the skeletal mesh in the Details Panel in the level editor, but in the Per ...

Poor Vulkan RHIThread performance in Development builds on some Android

UE - Platform - Mobile - Dec 10, 2024

Community-attempted workaround received in [Link Removed] Correct fix submitted to 5.6 FNMain in [Link Removed] which needs integrating into 5.5.3. ...

[CrashReport] GPUCrash - exiting due to D3D device being lost - D3D Hung - AMD

UE - Graphics Features - May 14, 2019

Separating [Link Removed] into Nvidia and AMD tickets.This ticket will house AMD information Exported data on 5/14/2019 with following Query:1 Month Time FrameMajorVersion is 4.22.1Callstack Contai ...