I just noticed the 2FA feature today in the user settings, but it doesn't seem to be working on my phone, at least. I tried setting it up, then I logged out and entered my credentials, but I just got the spinning bear. Luckily I was still logged in on my other device and was able to remove 2FA in my settings — and while it seems to be removed now, it still displays the option to remove 2FA in the settings. After a few minutes the "Remove 2FA" option went away.

Also, it's odd that there is no usual verification step to confirm I have the code saved before it applies the setting. It applies the setting and then you're supposed to save it afterward, which seems backwards.