Rifle idle animation and other rifle animations have the left hand twisted. I switched to another character with the same animation still getting the same error. Other animations like dancing, jumping.etc. has no problem. Please fix this.
how do yo use the xbox one if you add your own character = steps
1 type "rifle idle" into the search box on animation tab
2 look at the list if options ... the old ones are guys in uniform and the rifle man is facing forwards, pick the new /repaired animation with a Xbox character in the image
thats all there is to it as long as your character has a Mixamo rig the hands should be as my screenshot demos