Can't really say I'm surprised:
http://www.eurogamer.net/articles/2013-11-25-xbox-one-tv-int…
Sounds like they designed everything to output at 60Hz only, so this is a hard one to fix (but still possible).
The really stupid part is, most of the time you are watching a US show, with 4% PAL speedup, then this on top of that. Still probably (as with PAL speedup) most people just won't care.