Popup-Menu Fails to allow on Enter trigger to grab Field Value Prior to Modification

Issue report by Aaron Beck

Product

FileMaker Pro

Version

13.0v3

Operating system version

OSX 10.9.4

Description of the issue

On Popup-Menu Objects the On Enter trigger fails to allow a script to function prior to modification. If a user upon clicking a popup goes straight to a new value on the popup. The trigger On Enter runs AFTER the modification is already made. The On Enter trigger must occur before the change is made. I have tested this over and over can reproduce easily that the get(ActiveFieldContents) function cannot grab the fields value before the edit is made. If the user would click the popup and not make a change then make a second click to change it works but that is counter intuitive and makes triggers useless on popups for field modification tracking.

Steps to reproduce the problem

Create a Popup Menu
Add a scriptTrigger onEnter which grabs the Get(ActiveFieldContents)
Click the popup and choose another option on the popup

Expected result

The OnEnter trigger would trigger BEFORE a field value change and grab the original field

Actual result

The field value is changed then the OnEnter is run failing to allow pre edit script routine

Workaround

Have not found one