I spent about an hour looking through the Primal iOS code, and the code doesn’t match up with the reported behavior. The code adds a “reply” marker event tag before some “p” tags, but nowhere does it create a “root” marker event tag.

createNostrReplyEvent code: https://github.com/PrimalHQ/primal-ios-app/blob/3b1f2d13f261348ecdc219bc600043509d1d926d/Primal/Common/Nostr/NostrObject%2BExtra.swift#L221-L226

The current App Store version is 1.2.46 but what’s checked into GitHub is 1.2.30. The GitHub repository is 16 builds behind, so the backwards incompatible bug might have been introduced in one of those builds.

App Store: https://apps.apple.com/us/app/primal/id1673134518

GitHub repo version: https://github.com/PrimalHQ/primal-ios-app/blob/3b1f2d13f261348ecdc219bc600043509d1d926d/Primal.xcodeproj/project.pbxproj#L2443

cc: nostr:npub1k6tqlj78cpznd0yc74wy3k0elmj4nql87a3uzfz98tmj3tuzxywsf0dhk6