Board Game Arena

I've been slowly working my way the Arena ladder in Stone Age. This game (https://boardgamearena.com/table?table=224208009) had Wild Animals and Igloos on. Did I miss an announcement that the format was changing? Or was this some weird fluke as a result of the other UX changes that were made?

Indeed these options appeared in the middle of a season and had been left as a free choice to the players.
I have now set them to disabled, thanks for reporting this.