In earlier acrobat versions reason was showing in a text box ,when there is only one item in the list .
In acrobat DC it is coming as an item in the list box and user need to select the single item before signing.
can we show it in a text box if there is only single entry? Or is it possible to make it as default item in the list box.
Please see the part of script used :
Sorry for the delay in response.
I reproduced the same behaviour you describe. I will inquire as to whether this is a purposeful change or not.
If you have found a workaround to this query, please update the thread with your findings that will help others.
With the latest release of Acrobat on 14th Nov. 2017, this issue has been addressed.
To get the latest product update, within the product, click on the menu Help-> Check for updates.