Wandering trader sells 3 podzol for 3 emeralds instead of 1 podzol for 1 emerald like their other trades

Wandering trader sells 3 podzol for 3 emeralds instead of 1 podzol for 1 emerald like their other trades. It's the only trade like this and is inconsistent with the other things it sells.  Wandering trader prices don't change like villagers so it should be 1:1. The quantity sold before locking would need to increase to keep it the same as before.