Two Factor Authentication is making log in twice

I'm getting a strange occurrence on all of my websites. My guess is that it has something to do with automatically logging me out after one day.

Basically, when I log into any of my sites, I go through the usual Username/Password/2-factor thing... and then it makes me do it a second time.

I think it only happens when the session expires (due to the Manage Login Duration from Defender)