Kalista Ultimate Bug

Dear Riot, I am please to inform you of a bug that I had found with the new champ Kalista and her ultimate. I will try and keep this brief and try to explain the error best I can. Assuming the knowledge of Kalista ult, we know that when ulting Kalista will grab hold of her sole partner, bringing them closer to her and cause them to become untargetable. Today I had played Caitlyn, Kalista bot lane with a friend, we had taken Baron Nashor, I was low so I had decided to return to base using the b key, as I went to return, my friend (him being Kalista and me being Caitlyn) thinking it would be funny, had ulted me last second to stop me from returning, confused I had still returned to base, receiving the attributes of the spawn pad (healing, extra speed, mana regen) for about .5 seconds, and immediately return to Kalista blinking to her in the Kalista ult form shooting out with full health and mana with the speeds from the spawn pad( Keep in mind I was at Dragon pit when I had returned and immediately received the spawn pad buffs and going back to Kalista in ball form shooting out with full health and mana). To test this Bug out we had done it again to confirm this error. B with baron buff on and at last second while b-ing have Kalista ult you so you immediately return from spawn pad back to her with full health. I hope this will help out the community and Riot, if any question feel free to message me over my league account or over my email which is [email protected]. Sincerely, demonwarrior11