iOS 13 Duplicate Birthdays
Since updating to iOS 13 on iPhone XS, I'm getting duplicate birthdays in the Calendar app.
I'm now up to 3 birthdays per person, even my own, one though I've removed my birthday from my own contact card.
They can't be deleted, and I've tried turning off calendar sync in iCloud settings, rebooting, then adding calendar sync, and end up with an an extra birthday per person.
The duplicates do not show up on on my MacBook Pro or iMac.
iPhone XS