Game ID: 63597 (link: https://18xx.games/game/63597)

During the auction, all privates except Mexico City-Acapulco Railroad had bidders. I purchased Mexico City-Acapulco Railroad, which triggered the cascade of individual-private auctions. We completed all auctions and, after winning Mexican National Railroad, I set NdM's par. I decided I wanted to undo and continue bidding on Mexican International Railroad, so I clicked "Restart Last Turn", which reverted the game to, apparently, the previous action, which was my purchase of Mexico City-Acapulco Railroad.

I'm not sure that it matters, since I think this is server-side, but I'm on Chrome 96.0.4664.93 (Official Build) (64-bit) (cohort: Stable)