Many handlers connected to the single japc property/field - only one handler gets triggered
When user adds connects many handle-functions to single property/filed parameter only the lastly connected handler gets the updates. This is the case only when many handlers are connected to exactly the same parameter - is works properly when the first handler is connected to DEVICE/PROP and the second to DEVICE/PROP#FIELD The problem occurs when enabling subscriptions globally (japc.startSubscriptions()) and also when you use startMonitoring() for each subscription.
Attached you will find the simple example of the issue test.py