A dispute has emerged on Polymarket regarding the Lighter token (LIT) airdrop date, which has entered the UMA challenge phase. The contention centers on whether the airdrop occurred on December 29 or 30, with a user claiming it took place within one hour of the date change on the 29th. Polymarket employs UMA to resolve such disputes, enabling token holders to vote on the outcome after a challenge is initiated. The resolution of this dispute will determine the market's settlement.