Camera makes front-facing wall invisible in Build/Buy

I logged into TS4 for the first time in several months to do a build project when, while making the first wall, I flipped my camera around and, wouldn't you know it? Only the windows were visible from that side, no wall. It's like one of the live mode camera settings yet I've made sure that those setting were, indeed, off, and that I was in fact in build mode. I troubleshooted with the game's graphics settings to no end. I unfortunately cannot attach a photo as the F12 key on my keyboard is broken, and this seems to only happen in build mode. I hope that this is specific enough, ask any questions you want. Never used CC/Mods on this account.