Re: How do I fix my Sims 4 broken UI?
@madabanana Honestly, I'm a bit stumped. I've never seen this issue that wasn't caused by either mods or the wrong in-game resolution. (Your game still looks like this in windowed mode with a reduced resolution?) I believe you've repaired too, so I'm running out of ideas.
One thing you could try, just to be thorough, is creating a new admin user account on your computer and playing there. (Make it a local account, as in don't sync with Microsoft, and don't sign into any other services.) You could sign into your current Origin account, and you shouldn't have to redownload anything. If the problem is still there, the issue is the game files; if it's not, it's the user files.
And you could delete the new account after testing.