Why are dropdown selections reverting to default when the user clicks into a different field?

Hello all,

We use fillable PDF forms in our organization and we are running into a problem.

From Adobe Reader ONLY, when a user selects an item on a dropdown list and then clicks into another field, the dropdown select reverts to default value. There is no scripting or anything special about this dropdown, it's just basic text selection.There is also nothing conditional or special coding with any other field on the form. Very basic stuff. It's worth noting that this problem doesn't happen every time and doesn't happen with every user of Adobe Reader.

I tried changing the dropdowns to have the option Commit Selected Value Immediately checked and that didn't make a difference.

Any thoughts on how to work around this problem or resolve it? I might just change the drop down to check boxes if I have to but I don't want to do that if not necessary.

Thanks,

Karli