When the enhance instance asks for the 2FA code in the mobile browser, the keyboard doesn't turn into numeric mode, so for every one of the 6 boxes the keyboard returns text mode and you need to switch to the numeric pad again.
I tested with iOS and Android, both have the same issue, so I don't think it's a browser thing.
This also makes auto completion apps like 1password to not work on mobile. I don't know if this has happened to anyone else.
I don't know if this has a fix programmatically, but there are other pages that don't have this issue, for example Upmind works well in this regard.
Would you take a look?