Teferi Vanguard

Raistlin

Has anyone else noticed that when this Vanguard is in play, Greg does not have his first card disabled after casting a card? Was playing with the Vanguard out, and Greg got a huge cascade and played every single card from his hand. 
Then it happened again in another match.

I'm almost sure this happened...but I could be mistaken. Just checking to see if anyone else came across this?