FYI When you use the GE app quick buttons to pause the battery, it sets both the battery charge rate and battery discharge rate to zero. You can use one of the GE app settings to manually set only the battery discharge rate (like you can via the web portal).
Having manually set the battery discharge to zero using GE software, you can see if the battery still discharges a bit. That way you can tell if it is a GE thing or a WW thing.
My money is on a GE thing.