Prevent ESC key from attempting to close file/save changes in PDF express.

Usage of the ESC key on radio buttons and check-box in an interactive PDF file displays the save-changes dialog that attempt to close PDF express after the operation is performed. It is worth noting that for the following applications:

Adobe Acrobat reader, the ESC key does nothing to the file.

PDF Pro, pressing the ESC key display a yellow highlight around the radio buttons without closing the application or request to save changes ( see attached screenshot).