This snapshot changed illagers (Evokers, Vindicators, Pillagers, Illusioners, and Vexes) so that they would leave baby  villagers alone. However, Ravagers still go after baby villagers. While I'm sure this is a bug, it could also be due to the fact that Ravagers aren't considered illagers (for some reason). However, this leaves a inconstancy amongst the raiders, and may cause a raid loss because one mob still targets baby villagers