I’ve had the feet being attached to one foot problem too. I’ve found that sometimes setting the character to run partially fixes it, however I still have the issue of the feet of the avatar not reaching far enough to make a full stretch when doing a kick, or not reaching the hand when I put the foot and the controller right next to each other.
I still need to make more tests, but seems like my WMR is having connection issues with my ASMedia usb based ports (the ones I have for my motherboard, basically). I’m waiting on a USB expansion PCIe card to arrive to see if that fixes the issues I have with it.