Yup, Just found this bug at a really inopportune time. I really needed that 2 extra Mana. Guess I'm swapping it out, or just playing a Darksteel Relic until it's fixed.
I kicked a Skyclave Relic and the tokens didn't untap the whole game. My opponent played a Sleep with the Fishes on one of my creatures the turn after I played the relic, idk if that somehow affected the relic tokens?
When you kick skyclave relic, the token copies never untap. They don't untap on the untap step, and they didn't untap when i used manifold key's ability to untap artifacts, and that didn't work either.