Originally logged in Admin in a Chrome tab, refreshing the forums page in another Chrome tab usually shows the user as logged in, – not this time unfortunately. No errors were emitted once the login dialog was OK’d on the Chrome browser, the user still doesn’t show as logged in.
Tried the login on new Edge with clean bill of health for the cache, no problem. As a consequence, excluding the login page in Litespeed, then wiping the Stearnvault data on Chrome was a necessary move before re-attempting login. Success! 🙂