I'm having a real tricky problem with Google Tag Manager on my site.
On certain paths under my domain, GTM will load (Tag Assistant shows the right container loading, and the GTM console pops up when Debug mode is enabled) but not fire any tags, even tags set to fire on all pages. This is using the default regex for the All Pages rule, ".*" I know this since the Debug console shows all the tags in the container as "Not fired".
On the root of my domain, GTM works just fine and the container loads while tags fire as they should.
I even opened the Chrome console and got the current location with "window.location.href" - it returned the path, minus the hostname, of the page I was on as expected.
What possible situation would cause GTM to load properly on a page, but not fire All Pages tags?