[SOLVED] Date field is "type=hidden" in front end!

Hello,
I created a date field on my site for Date of Birth, and enabled the option "SHOW ON REGISTRATION" the field title as well the the field's privacy settings are being displayed on the front-end registration, edit profile, & view profile pages but the somehow the actual CALENDAR of the field has gon missing. on checking the source code i have found out that the there is a particular code "type=hidden" being shown in the line. can you please advice on what's wrong and how to remedy it.
Thank You.
My Joomla version 2.5.8, CB Version 1.9.0

Are you perhaps using CB Conditionals to hide this?

I am not using CB COnditionals
the only conditions on my CB Auto Actions are regarding my other custom field cb_professions to shift users from one ACL user group to the others!!

And i deleted the original field and created a new one still i am getting the same error

The calendar JS is failing. Check browser error console and you'll probably see a fatal JS error occurring, which will stop all other JS from functioning properly. Switch to default Joomla template and see if issue persists as it's typically from JS loaded in by a 3rd party template.

first of, i would like to thank you guys for your support. Now i got the JS errors from the console,

I did the following things:
change my template to beez5 template
changed my template to atomic template
disabled bootstrap template plugin in CB
changed back to my gantry based template
cleared my gantry cache
cleared my browser cache
kept on refreshing the front-end all the time

but still no results. also krileon i would like you to note that the field was working perfectly up untill a few days before on my current gantry template.

Then something was changed up to a few days ago to cause it. Can you recall anything you've changed, installed, or upgraded in the last few days then revert those changes?