I would just call Tara and ask her if this condition indicates something is wrong with the unit you received.
I am quite sure what they sell is a refaced voltmeter, in this case a “battery indicator”
perhaps the old face was inadvertently left in the housing when they installed the Veglia style face?
it appears you may have upgraded to brighter LED bulbs. I wonder if they are causing something not normally seen - not sufficiently illuminated - to become visible?
good luck,
Larry