PSA: According to Riot, a teammate can in fact ban your hovered champ and it's not punishable.

I had a teammate in a Normal Draft game ask if he/she could have my role of Jungle. I told them no. So they banned Lee Sin who I was hovering after they responded with a "fuck you then". I filed a Support Ticket and was told that the only punishable offense that I provided with my screenshots was the "fuck you then". So apparently if this player had just banned away my hovered champ and not said anything, it isn't punishable to grief your own teammates by banning their picks. I was told "all players are allowed to ban any champs that they don't want to play against OR with."[](
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