weird bug with leblanc's clone

so i was in a ranked game on prestigious el blanko and i was "microing" with my clone and right as it died, it lasthit a minion and i do mean lasthit

the minion died from the auto attack afaict

however, i did not receive the gold.

please fix this broken interaction so that i can lasthit with my clone in this manner and successfully receive the gold, just as i am sure had always been intended. thank you