Full-screen popups breaking game

Whenever I load up the Sims and it gives me a full-screen pop-up, whether it be promoting an event or some new pack, when I exit out of the pop-up, it completely breaks my game, making me unable to click on anything. The only action available is when I try to close the game, and it pops up with the "Are you sure?" message. This has been happening since full-screen pop-ups started being used at most game launches. Occasionally, clicking the "buy now" button and then exiting from there will bypass the weird glitch, but not always.