I use Mixamo animations to test and demo retargetting.
When retargetting an animation to a Metahuman in 5.6, I am getting very different results than in 5.5. Attaching image.
I used an identical process to import the character and retarget the animation.
I realize that a manual retarget will resolve, but it is definitely worth reporting, and wondering if anyone else is experiencing this.
I assume something has changed with the actual bone structure in the Metahumans (not likely), or the automatic retargetting feature in 5.6 is unfinished or changed.