Scrubbing the timeline in Sequencer can hang the editor when operating on constrained actors with complex control rigs

UE - ACT Character - Anim in Engine - Sep 11, 2026

The issue is caused by UAnimDetailsProxyManager::ForceUpdateProxyValue triggering evaluation of constraints that are attached to control rigs. When scrubbing, requests to ForceUpdateProxyValue are ...

Sequencer CR curve evaluating differently when navigating from parent sequence

UE - ACT Character - Anim in Engine - Mar 10, 2026

Depending on whether I first open the level sequence that contains the control rig, or its parent level sequence, the animation curve will evaluate differently.  ...

Animation Constraint Jitter in Sequence when Constraining Layered Control Rig node

UE - ACT Character - Anim in Engine - Nov 6, 2025

When using constraints with layered control rigs, you get jitter on the constrained object. ...

Restoring AnimInstance fails when ControlRig and Motion tracks are consecutive in sequencer

UE - ACT Character - Anim in Engine - Jul 27, 2025

In the Sequencer, Control Rig and Animation tracks are placed consecutively. During the transition, the Animation track captures the AnimInstance state before the ControlRig track's RestoreState is ...

Incorrect motion baking from Anim Sequence to Modular Control Rig

UE - ACT Character - Anim in Engine - Feb 26, 2025

When using a modular control rig and baking to a control rig directly from an anim sequence, some parts do not bake correctly. ...

Sequencer fails to play anim sequences on linked anim instances when an Additve/Layered FKControlRig track is active

UE - ACT Character - Anim in Engine - Mar 2, 2024

Animations can't be played with Sequencer via slot nodes in linked anim graphs when an additive/layered FK Control Rig is active.  This is because adding an FK Control Rig changes the anim instance ...

Sequencer Curves View: Fourier Transform Curve Filter stopped working?

UE - ACT Character - Anim in Engine - Sep 20, 2023

The Fourier Transform Curve Filter seems to have broke in 5.3+ [Image Removed] ...

Bake to control rig doesn't process virtual bones

UE - ACT Character - Anim in Engine - Dec 13, 2022

It seems that virtual bones aren't being processed as part of the bake to control rig workflow. This was reported on the linked UDN. When baking to control rig, it seems that virtual bones use the ...