Movement corrections occurring while standing still on rotating platforms

UE - Runtime - Character - Oct 5, 2022

When the player is controlling a Character actor, using the CharacterMovementComponent (CMC), unexpected movement corrections will occur while standing still on a movement base that is rotating. ...

[MetaSounds][Voice Management] - MetaSounds set to Restart do not virtualize correctly when the Attenuation Shape is not a Sphere

UE - Audio - Aug 17, 2022

When using Attenuations with MetaSounds, if the Attenuation Shape is Sphere it works as expected. However, other shapes do not work correctly. The sound either becomes deactive or sometimes the soun ...

Crash When Loading Cooked Material Assets in Editor Due to Shader Serialization

UE - Rendering - Architecture - Shaders - Aug 27, 2025

In Unreal Engine 5.6+, the new shader serialization logic in FShaderMapResourceCode::Serialize does not correctly handle cooked assets that are loaded back into the editor (e.g., from a mounted .pak ...

Level Sequences in Level Instances

UE - World Creation - Worldbuilding Tools - Level Instances - Mar 20, 2023

Workaround is to specify Binding Overrides on the LevelSequenceActor through its Details panel as such (while editing the LI). ...

A vehicle using Async Scene on the body but not the wheels will crash the editor

UE - Gameplay - Aug 4, 2016

A vehicle using Async Scene on the body but not the wheels will crash the editor[EUS-TJ Ballard] Vehicle using Async Scene on body but not the wheels crashes the editor User Description: Async sce ...

Editor Crashes when spawning a Physics enabled object inside another

UE - Simulation - Physics - Sep 22, 2017

Editor Crashes when spawning a Physics enabled object inside another. Regression: Unknown Can Test in Main if requested. ...

Time Synth fails to play 96KHz audio clips

UE - Audio - May 19, 2020

TimeSynth 96KHz music clips only play for a split second and then stop. 48KHz files play correctly however 96KHz 16-bit and 24-bit files do not This was reported and tested in 4.25 (CL-13144385) an ...

"Scale for <ComponentName> has a component set to zero, which will result in a bad body instance" warning spam when moving actor instance even with Collision Profile overriden to "NoCollision"

UE - Runtime - Simulation - Jan 12, 2026

When a StaticMeshComponent has a scale component of zero in WorldSpace (after accumulating with the hierarchy from the root to it), function UPrimitiveComponent::OnCreatePhysicsState() logs the warn ...

Restore state on animation in level sequence will stop all montages

UE - Anim - Sequencer - Feb 12, 2020

It looks like UnbindFromSkeletalMeshComponent stops all montages. This is called when the animation section restores its state.  https://udn.unrealengine.com/s/question/0D52L00004lun3ySAA/restore ...