Actually, when I posted it, I thought it was, though I had realized that the thin leg was Xavier's arm, but the other two legs looked weird.
It was the other two left-most legs that just didn't look right, but the other half reckons they're pretty normal.
I wasn't sure what I was looking at, and my perception was that something was "up". On reflection, maybe it isn't. *sigh*
To me, it originally looked like the extreme left leg had a knee cap FACING the camera, but now, I can see both a knee-cap or the back of the knee.