Mobile dropdown hidden



 We are having a problem with one of our applications where the dropdown items are hidden out of view, here is a description.

1- Mobile App

2- Screen with tabs

3- Tabs have forms inside

4- Some (Most) of the form inputs are dropdowns.

5- The closest dropdowns to the bottom of the screen open still being positioned down the dropdown, meaning some of their items will be hidden! See the image below!

After note: This happens also in the phones/tablets!

 Thanks in advanced for any help!