Some Commons categories are linked to Wikidata, but are missing from the page_props table in the database. Examples:

https://commons.wikimedia.org/wiki/Category:Broadway_East,_Baltimore
https://commons.wikimedia.org/wiki/Category:Buddhist_temples_in_Lamphun_Province
https://commons.wikimedia.org/wiki/Category:Buddhist_temples_in_Ubon_Ratchathani_Province
https://commons.wikimedia.org/wiki/Category:Civil_law_notaries
https://commons.wikimedia.org/wiki/Category:Climate_change_conferences
https://commons.wikimedia.org/wiki/Category:Former_components_of_the_Dow_Jones_Industrial_Average
https://commons.wikimedia.org/wiki/Category:Dukes_of_the_Archipelago
https://commons.wikimedia.org/wiki/Category:Eastern_Catholic_orders_and_societies
https://commons.wikimedia.org/wiki/Category:English_people_of_Turkish_descent

Lucas confirmed this on Twitter https://twitter.com/LucasWerkmeistr/status/1175747434208727040 and there's discussion at https://www.wikidata.org/wiki/User_talk:Jheald#Quarry_oddity . It's not clear why this is happening - the examples I've given are from categories I've found when looking through commons links from enwp (in alphabetical order, hence B-E).