I'm a dummy...
Please don't laugh too hard, though I'm laughing at me, but my game suddenly won't let me minimize the game window so I can go online. I have to shut the game down completely. I know I've had this issue before but darn if I can figure out how I stopped it from happening! Thanks!
Lizzychicago This is a known issue with the DirectX 11 version of Sims 4. You can switch back to DX9 if you want, or you should be able to select another window while playing in windowed mode if you can click it directly. If you want to report that you're also affected, please use the master thread on Answers HQ:
https://answers.ea.com/t5/PC/DirectX-11-Technical-Issues-and-Feedback-Thread/td-p/14022619
Since we have multiple threads covering this issue, on this site and on AHQ, I'll lock this one here.