Hi. Have you made sure your HTML INPUT tag TYPE is set to DATE (on the form's HTML code) for the field in question? Since the data is available when the field type is set to "textbox" in Form Tools, maybe the HTML INPUT tag TYPE is still set to TEXT, rather than DATE. This is just a quick/random guess. Here are a few references that may help:
http://www.w3schools.com/tags/tag_input.asp
And, HTML5 has several new INPUT tags:
http://www.w3schools.com/HTML/html5_form..._types.asp
Of course, I am assuming that you added your form using the "direct/POST" method, rather than using the Form Tools Form Builder module. If the latter is the case, then am not sure what is causing the problem, since I have not yet used Form Builder. In any case, just check all of your INPUT tags in the HTML code to make sure they match the settings in Form Tools' view fields.
http://www.w3schools.com/tags/tag_input.asp
And, HTML5 has several new INPUT tags:
http://www.w3schools.com/HTML/html5_form..._types.asp
Of course, I am assuming that you added your form using the "direct/POST" method, rather than using the Form Tools Form Builder module. If the latter is the case, then am not sure what is causing the problem, since I have not yet used Form Builder. In any case, just check all of your INPUT tags in the HTML code to make sure they match the settings in Form Tools' view fields.