Been on the IK beta for a while, just logged in after today's patch (11922) and experiencing a strange new issue with sitting/crouching/laying animations.
Previously when the locomotion layer goes into one of the sitting/crouching/laying/etc animations when not in full body, the feet follow the animation. After this latest patch after a moment the feet are always overridden by the IK even in desktop. This affects all AV3 avatars.
The feet are being forced to follow the footstep IK at all times. Whereas previously they would only do that when standing still and upright.
Really easy to repro, just put on any AV3 avatar on desktop and lie down. The feet will continue to run footstep IK and the avatar will double over and/or crunch up. Even visible with the default lying animation.