Loyalty trident does not come back after hitting a shield.

I have recently had lots of fun with the new shields, but I have noticed a problem. Loyalty Tridents do not come back to you after you throw them, if they hit a shield. Me and my brother was playing and I threw a loyalty trident at his shield, it bounces off and lands of the floor, like it Is a normal trident. They can then pick up your trident. I believe it should happen to normal tridents not loyalty ones, as they are supposed to come back to you, is this a bug or is it meant to be like this?