vCenter doesn't appear to generate a warning or show when a user times out from inactivity. After idling for about 10 minutes, I returned to testing datastore creation, but couldn't change anything in vCenter due to not having "sufficient privilege" anymore (see screenshot). However, the user account appears to still be logged in and active. Logging out and back again fixes the error.
Would it be possible to show a popup when the user times out for inactivity, maybe prompt to log back in?