The red part (sorry dont know what its called) seems to be flashing.
This should be reported in this thread. http://www.smogon.com/forums/threads/bug-reports-v2-0-read-op-before-posting.3469932/This happened to me during a random doubles battle this morning: http://imgur.com/X3K9hNG Poor Meowstic-F lol. This was the first time I've seen a broken image like that. I was playing in https if that helps.
Also, this is my 1st post on the forums so I'm not sure if this is the correct place to report that issue. I also would like to mention a huge graphic issue in double battles... users are unable to view their right-side pokemon's stats upon mouseover. If there is somewhere else I should report that, let me know and I will. Thanks.