Krog's Weighted Coin isn't working as intended. I think it started since last night that's when I noticed something was off.
Today I went for another run with Diplomacy and noticed the same thing, I had a recording this run today and counted the tosses individually.
Total tosses: 51, Heads: 25 Snails: 26.
Just try Krog's coin for yourself. You'll notice it immediately.