In Safari 5.0.5 (OS X 10.6.
, the Fill Login shortcuts (both command + slash and command + control +slash) have stopped working for some sites, such as constantcontact.com or forum.agilebits.com. Other sites are fine, and for the problem ones, clicking the 1P icon and choosing Fill Login works fine too.
The problem does not occur in either Firefox or Chrome. Deleting Safari preferences or uninstalling and reinstalling the 1P extension for Safari doesn't change anything.
Is this likely a Safari or 1P problem, and in any event, how can I solve it?