i dont think there is anything wrong with your form.We've had similar
issues and what we determined was that if they are on an apple product
(Mac/IPad,etc) , safari has its own PDF viewer which is not Adobe Reader
by default, and it doesnt handle interactive forms well. Thats why when
you save it to your desktop and then open it, it opens. Its because its
opening in Reader.the problem does not exist solely with Safari though.
i find that certain tablets/smart phones, etc wont preview it either.T...