Oculus Quest Link with OpenXR fires action events multiple times when multiple action events are bound to the same key

UE - Platform - XR - Jul 14, 2021

From a developer: If the same key is mapped to N action events all the mapped events fire N times. This issue only exists with the OpenXR plugin enabled and does not occur for any keyboard/mouse i ...

New Viewport Resolution setting increases every time a new PIE window is launched

UE - Editor - UI Systems - Slate - Sep 2, 2022

When closing a PIE viewport, we write the size back to the New Viewport Resolution setting in case the window was resized during play. However, we do not account for the window border, and write bac ...

Changing Asset Manager settings breaks game feature scan directories

UE - Gameplay - Sep 29, 2022

The asset manager is used to scan directories on disk for different Primary Assets that can then be loaded on demand. Game feature plugins support the ability to add additional scan directories when ...

NiagaraEditor timeline folders are not saved correctly

UE - Niagara - Feb 8, 2023

It works correctly in 5.0.3. ...

Multi-process cooking does not complete in UE5.3.0

UE - Foundation - Data Pipeline - Cooker - Sep 26, 2023

Projects with multi-process cooking enabled will not complete packaging. If MPCook is disabled, packaging can be completed.  ...

iOS Quick Launch from the Editor no longer starts the app on device

UE - Platform - Apple - Feb 28, 2024

For some reason, iOS apps no longer launch on device when using QuickLaunch within the Editor.  Instead, it does install the app onto the device, but when it attempts to then launch the app, a messa ...

Post Process Animation Blueprint Crash When Using Blend Node

UE - Anim - Runtime - Anim Blueprints - Sep 24, 2025

When using a Blend node inside a Post Process Animation Blueprint, the editor crashes while rendering thumbnails. The crash occurs because USkeletonThumbnailRenderer attempts to draw a thumbnail wit ...

nDisplay Regression: Public header DisplayClusterViewport_OverscanSettings.h now includes internal header Math/MarginSet.h, breaking clients' code

UE - Virtual Production - nDisplay - Sep 29, 2025

On the nDisplay plugin code, CL 44773085 from August 12 introduced a new struct template TMarginSet and changed struct FDisplayClusterViewport_OverscanSettings to use it. However, the latter is defi ...

Reroute nodes do not work for Pose connections in Anim Graph

UE - Gameplay - Blueprint - Mar 5, 2015

Reroute nodes do not work for Pose connections in Anim Graph It appears to work until you recompile [Image Removed] ...