Minor Debugger usually handles displays all errors and database queries for easy access while in debug mode. When Zend Studio is used it should not do that, because Zend Studio can handle them already.
It all works fine with Zend Studio 5.x and below, but in Zend Studio 7 debugging cookies are not populated to $_REQUEST variable and are preventing debugger to detect Zend Studio debugging session and turn it off automatically.
This makes debugger work inside zend debugger session and makes total script runtime longer.