Material PlatformStats Android GLES&Vulkan Pixel Shader Row is empty

UE - Platform - Mobile - Nov 26, 2020

I think it's caused by mismatching names of shadertype, which was hand-coded in MaterialStatsCommon.cpp ...

Can't preview correctly when using Lookat Track with [Can Blend] enabled

UE - Anim - Sequencer - Feb 15, 2021

When I play it in PIE, it plays fine. This problem does not occur in 4.25.4. ...

Crash when playing a other Level Sequence inside a Spawnable Actor registered with Level Sequence

UE - Anim - Sequencer - Feb 17, 2021

This issue crashes on exit when playing a other Level Sequence on an Event in a Spawnable Actor. Also this problem doesn't occur in 4.25. ...

TextBlock kerning does not match the screen resolution scale.

UE - AI Workflows - UI Systems - Slate - Dec 15, 2021

The kerning of the TextBlock does not seem to follow the dpi scale of the screen resolution.When the Image (which captures the display of the TextBlock) and the TextBlock are displayed, they match a ...

Distance field shadows cut out early in the second eye

UE - Platform - XR - May 3, 2022

Distance field shadows have artifacts in the second eye in XR as shown on the picture. [Link Removed] ...

ParticlePosition doesn't use Previous values

UE - Rendering - Architecture - Niagara - Jan 9, 2024

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

[Interchange]: Skeletal mesh import do not take geometric transform

zComponent - Archive - Oct 9, 2024

We need to support geometric transform for meshes when importing skeletalmesh ...

Crash when displaying lumencards on map with many objects

UE - Rendering - Features - Lumen - Aug 1, 2025

There is a thread conflict between FRDGBuilder execution in Background Worker and LumenVisualizer's LumenCard add/delete process. When lumen cards are displayed in a scene with many objects, a crash ...

InvariantLeft and InvariantRight justification mispositions wrapped multi-line text

UE - AI Workflows - UI Systems - Feb 26, 2026

When a UMG Text widget is set to Auto Wrap and uses InvariantLeft or InvariantRight, the wrapped visual lines are positioned differently than expected compared to Left/Right. In the current engine ...