Yes. That's one of the few annoyances I have with Firefox. I have to use a local app where the root domain URL results in an IIS error page. Annoying, this always appears in the "Awesome bar" auto-completion list before the URLs I want to go to.

On the other hand, I like the meta-characters that can be used to modify the search results: https://support.mozilla.org/en-US/kb/address-bar-autocomplet... (though I wish they were easier to remember).