[topic moved to iOS subforum]
We received your PDF form. We will investigate the cause of the problem and let you know what we find. Thank you!
There is a defect in Adobe Reader for iOS that prevents the user from opening the dropdown. We filed a bug report to keep track of it. We will fix the defect in a future release of Adobe Reader for iOS.
Thank you very much for reporting the problem.
Okay, thanks very much for your responses and research. I hope to see the new release soon!
For the particular form in question, it was authored (likely initially via some field recognition algorithm) with several instances of a dropdown and a text field overlayed over one another. Because the text field is before the dropdown in field/tab order, on tap, it is processed first by the Mobile Reader. That is why your experience when using the Mobile Reader is that of a text field.
The Desktop Reader processes fields in reverse field/tab order (z-order), so the experience that user will see is that of a dropdown.
Hope this helps,
This worked! Thanks so very much.