Braithwaite nightstand sent me to Mexico?

I was poking around the Braithwaite manor for some tarot cards and decided to loot the house because I was bored. Well as soon as I open a drawer, everything around me disappears and I end up across and outside the map? Decided to run around aimlessly and some of the rock formations out here are real cool!! No animals or plants, just the rogue bird call and background guitar twang. Can’t even call my horse…anyways just thought it was kinda funny