Tahm Kench on Ascension

So to start this off, I'm not sure if it's really a bug per se, but on Ascension Tahm Kench can ult back onto his summoner platform. While Ascended. And still buy items. Part of ascension is not being able to back to heal or buy, which is kind of evidenced by the fact that when you ult back to base as Tahm it doesn't heal you/give you mana. Maybe put a barrier up like at the start of a Summoner's Rift game that only allows you to TP through it with the special Ascension trinket? Or something like an inverse Camille ult maybe, that keeps people from getting into the space instead of out of it.

The enemy team during the game I played earlier was pretty upset about it, and rightfully so, I managed to have about 400HP left when I got away from them and ulted back to base to buy items while Ascended. I honestly felt pretty bad about it and ended up just giving them the kill after how much work they had to put into it just for me to grab a Warmog's and heal it all back up in complete safety. I know it's just a rotating game mode, but they're supposed to be for fun and this is incredibly abuse-able.