So my sim family decided to adopt a couple of foals. It's the first time I've adopted a horse so also the first time I've bought a box stall. My family is literally living in a barn on the corner of my legacy lot with barn doors and everything, and I put two box stalls side by side against the wall. The foals are able to enter and move around in the box stalls with them up against the barn wall, but they won't nap!

I moved the stalls away from the wall and they will nap now, but now the stalls look funny with so much gap. Is there a trick to getting them up against the wall with full function, or am I just out of luck?

There does seem to be numerous routing problems with box stalls, unfortunately. The only thing I can personally suggest is when you're placing the box stall, hold down ALT, which turns on free placement. Then snug them closer to the walls, but still not touching the walls, it should look a lot less strange.