JqueryUI Toooltip not compatible with Dialog (Modal form)?

JqueryUI Toooltip not compatible with Dialog (Modal form)?

Sorry for my Google Translate. Question: Why, when I use the tips (tooltip) in the widget Dialog (Modal form) Jqueryui, when you click on the text box input to which is applied a hint (tooltip) button activates the modal dialog box? And if I enter text in the input field and press the space bar element Dialog (Modal form) button is actuated, closing the dialog form.