"Account Owner: (null)" in "Legacy Contact Access Key" printout.

Has anybody managed to get iOS18.2 to print out a proper "Account Owner:", or "Owner's Apple Account:" name in their "Legacy Contact Access Key" printout?

I have created legacy contacts for two different iCloud accounts, one for an iPhone 11, the other for an iPhone 16, and in both cases my details appear as (null).

I am hoping that somebody has got something better than that, and I can correct the problem. Otherwise I am worried that a whole lot of Legacy Contacts (including mine) might fail because Apple don't know the name of the account holder they are supposed to be verifying :-(