If come across a bug during your PTR testing experience please post it in the PTR Bug Report Forum here:
http://us.battle.net/wow/en/forum/2359401/

Please do not post bugs in this or other discussion forums.

Issues with the game client itself should be posted in the Technical & Mac Technical Support Forums.
Technical Support: http://us.battle.net/wow/en/forum/4618535/
Mac Technical Support: http://us.battle.net/wow/en/forum/4618536/