So effectively an LPR cannot leave the country for more than 12 months until their re-entry permits are approved even though an LPR is permitted to leave once their biometrics for the re-entry permit are done. Maybe they should plan to come back within 12 months of departure then?
In the US they own a house, a car, a few rental properties, have friends and family, and pay all their state and federal and property taxes. They're also in the process of starting a business in California that manufactures dog chews. Not sure how UCSIS sees all this but to me it seems like strong ties.