I didn't see this on trello so posting this here. It may be limited to a single emote, in this case, "Feel the Push" but I already own this yet the store hasn't flagged it as owned.
Thanks for pointing this out. I just submitted the fix for the Feel the Push emote, so you should no longer be able to see (or purchase) it if you already own it.
(Twin Suns should have been fixed yesterday, so if you still see them if you own them already, please reply)