Discovery Quests: Certain quests have blank text

Unfortunately, I'm experiencing this problem on my pc as well. My save will start out fine then the discovery quest boxes go blank. I've noticed that it seems to happen after I use manage worlds to build on a lot. I've also had random things disappear, like the planters at the spice festival. The plants themselves are there but no planter boxes. Or once I went to visit an apartment lot and there were no walls. You could see the sims inside the apartment but there were no walls or doors. No matter what though the quest boxes always go blank first. I've removed all of my mods, repaired my game, I even went as far as to reinstall the game but it's still happening.