Thread:Project:Support desk/$wgCookieDomain setting has no effect

Setting the value of $wgCookieDomain isn't providing any effect for me. For my test setup on my local machine, MediaWiki defaults to 'practicalplants.local'. Setting $wgCookieDomain to '.practicalplants.local' (leading .) has no effect. I've also used $wgSessionName to change the session cookie name, which does work.

Any clues as to why it might not be working? Anything I can do to debug?

Thanks, Andru