Yesterday i played a Flex Queue game with a full team. Four of us was playing on the new client, and **the host was playing on the old**. We queued up, without noticing that for some reason, two players had selected the same role, jungle. When we came into a game, _they had both been assigned the same role_. Needless to say, confusion followed.
This wasn't possible back in season 6; is it a new feature allowing for more flexibility and meta-shifting, or is it a bug?