That might be a bug. Does your shop show bip21 invoices with the payjoin info and lightning info at the same time?
Payjoin via lightning?! This was a test from our website, which has payjoin enabled…but from your lightning wallet?! 🤯
nostr:npub1yevrvtp3xl42sq06usztudhleq8pdfsugw5frgaqg6lvfdewfx9q6zqrkl whoa! 
That might be a bug. Does your shop show bip21 invoices with the payjoin info and lightning info at the same time?
Yes…it was a unified qr