[GAMEPLAY] Bloodthirster can keep you from getting stopped while backing

While using BT I had the shield after killing some people and I was backing as a minion wave came at me. The wave hit me and the minions started to attack me but I finished backing, but I had a good 3 seconds left on my back. So I tried this again and again and saw that I was not stopped until the BT shield was depleted. Nothing stopped me until the shield was gone, not dragon, baron, towers, minions, or other champs' attacks. So it works out like this

1. Get BT
2. Get the shield
3. Have a safe and free back until shield is depleted. [Edit]

After doing other testing, it would seem that all other shields protect you from getting stopped while backing until the shield is depleted. I tested with Sion, Janna, Riven, and Diana.