Control Rig + Animation in Sequencer Can Lead to Unexpected Slider Reset

When a character has both a Control Rig track and an Animation track, interacting with any slider in Sequencer can be interrupted.

Steps to Reproduce

1. Add a reference to a pawn (BP_ThirdPersonCharacter)
2. (If missing) Add a Control Rig track (CR_Mannequin_Body)
3. Add an animation (MM_Jump)
4. Mute the ControlRig track
5. Unmute the ControlRig track
6. Move any slider