Taming still works, I just tried it on a Phiomia and it tamed the second it ate food, might be an issue on your end.
If the Taming code was broken the trainer would give you an error code for it.
Open your inventory twice, activate the trainer with the inventory open, after Activated turn on Fast Taming then Tranq something and give it Food.
If it still works for you it should auto tame the moment it eats.. But currently everythings working for me so it seems its just an issue on your end
Level Editing does seem to be broken again though, but all the trainer options work, its just the editor portion.
[Edited by DigitalIP, 8/6/2015 8:48:55 AM]