I recently discovered that break points were no longer working in PhpStorm. Other than updating PhpStorm to 2016.2, I don't think I (consciously) changed anything else, but being a developer, I know that something obviously changed :)
I confirmed that the listener was running and the cookie set. I also went to Run > Web Server Debug Validation and everything looks good, minus the "Remote host is configured as 'localhost' despite...", but as far as I can tell, that shouldn't be an issue. I'm using PHP's built-in web server.
php_info() also reports:
IDE Key: PHPSTORM
How can I troubleshoot this further?