- The bogus output: wbremoveclaims-update:0|: removing redundant property
- With uselang=qqx: wikibase-item-summary-wbremoveclaims-update: 0,
- The bogus output: wbsetaliases-update:2|es: Elizabeth "Betty" Short, Black Dahlia
- With uselang=qqx: wikibase-item-summary-wbsetaliases-update: 2, es
The reason for both is super trivial: these messages are just missing in lib/i18n/en.json!
Thanks for bringing this up. The idea is that …-entity-… works as a fallback when …-item-… does not exist. In the cases we are discussing here both don't exist. We should add the missing …-entity-… messages.