Yes that happened to me last week for the first time! Thought we were going crazy and missed something, so good to know this seems to be a glitch. Hopefully it’s resolved soon!

It might be due to Advantage+ audience. It lets you use Meta’s advanced AI to find your campaign audience. But 

you can still limit where ads should be delivered, e.g., excluding ages or locations, by setting Audience controls. It might be worth trying that out and setting your geographical limitations. 

Make sure you’re switching to “use original audiences”

I’m having a similar problem, but instead of audiences, it keeps adding a “send message” CTA, even after I click remove… super frustrating.