I get this exact same problem just as described in the initial post. Any updates?
Setup is like…
domain.com/1 (a full WP installation)
domain.com/2 (a full different installation with different prefix to database)
Seperate .htaccess files too. They are entirely separate installs.
Updating settings on #2 installation will lock you out of #1 and attempts to re-login will redirect you to #2. It does that basically for whichever was last updated.
Ok, found it. It was a quick fix.
My template file had a functions include where the head (doctype and meta->content-type ) was located. I moved just that part as the first output of the template page and it works.
It’s using a custom field selected from a metabox to pull the template, not the regular folder, but the templates are using all the other functionality of WordPress correctly. So I’m a bit puzzled.
Any ideas how w3 recognizes pages as part of WP ? Maybe I can add it somewhere into our templates.