DSC alarm door switch only triggers when armed

Hi,
I’ve come across a problem where by I can only get PLEG to detect a DSC alarm door switch when the switch is in the armed state within Vera.
I’ve tried the Event Type
t_front_door_open Whenever DEVICE_NAME is opened whether is armed or disarmed
(I’m assuming DEVICE_NAME is a variable that should display ‘Front Door’)
but it will not trigger when the Front Door is disarmed, only when armed.

Any thoughts as to why?
Cheers

Ive done a series of tests that appear to confirm that this is a PLEG issue

  1. changed the event type to : ‘Whenever Front Door is armed and opened’: PLEG sees the trigger (as long as the front door device is armed)
  2. changed the event type back to: ‘Whenever Front Door is opened whether is armed or disarmed’: PLEG does not see the trigger (whether the front door device is armed or disarmed)
  3. created a Vera Scene using ‘Whenever Front Door is opened whether is armed or disarmed’ as a trigger: scene triggers whether the front door device is armed or disarmed