Set Game Paused returns incorrect value when the game is already paused

UE - Gameplay - Jan 12, 2017

Set Game Paused returns incorrect value when the game is already paused. According to the tooltip on the Return Value (reads: Whether the game was successfully set paused/unpaused) it is expected t ...

Take recorder does not record detachment and multiple attachments correctly.

UE - Anim - Sequencer - Jul 14, 2020

Recording attachment will can add multiple sections to an attach track in Take Recorder. ...

Crash when committing level instances containing invalid child actor components

UE - Engine Scaling - Streaming - Level Instances - Dec 4, 2024

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

OLD - Anim - Oct 16, 2019

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

Possessing and Unpossessing a Pawn when using NetCulling causes the Client to lock up

UE - Networking - Aug 1, 2019

In this test bench, they are using a APawn with a custom replicated Movement Component rather than using a ACharacter and they are getting a different result that ends up in a permanent softlock of ...

Crash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true

UE - Rendering - Features - Path Tracer - May 16, 2025

Cash when entering Path Tracing view mode if r.Decal.NormalReprojectionEnabled true The licensee has reported: This crash happens because the DeferredShadingRenderer tries to extract the normal GBu ...

LevelInstance\PackedLevelActor: Problem with non-uniform negative scale.

UE - Engine Scaling - Streaming - Sep 10, 2026

A licensee is reporting transform issues related to using non-uniform negative scale on LevelInstances and PackedLevelActors. ...

Disabling LQ lightmaps causes crash on mobile preview

UE - Platform - Mobile - Mar 16, 2017

Memory leak in Test build when moving ISM with UpdateInstanceTransform

UE - Graphics Features - Jul 20, 2020

This leak occurs in Test builds, but not in Development builds. Updating InstancedStaticMesh with UpdateInstancedTransform every frame causes a memory leak. This screenshot was taken using Mempr ...

Bridge plugin causing crash when right-clicking content browser on Mac

Quixel - Apr 5, 2023

Right clicking in the content browser causes a crash with the Quixel Bridge plugin enabled.  This issue is occurring in Binary //UE5/Release-5.2-Preview-2 @ CL 24887336 This issue is not occurring ...