I upgraded from 2.2.4 to 2.3.0 and all went seemingly well. My issue is in a menu at the top of the page.
When not logged in, the date and time appear there.
Once I log in, I get a button that says:
_MA_NAV_ACTIONS
and expands to:
_MA_NAV_VIEWACCOUNT
_MA_NAV_EDITACCOUNT
_MA_NAV_NOTIFICATIONS
_MA_NAV_LOGOUT
_MA_NAV_ADMINISTRATION

So clearly it is supposed to be a menu.
I am using the default theme and templates as the site was just for practice.

I have the same problem, with the same voices.

Nobody has an answer?

Thank you