iOS 18.2.1 - Contacts app broken?

[Rafagon]

Okay, I am in disbelief right now.

I just added a contact. In this case, a company, not that that matters.

I added their customer support number and the 5-digit short code (from which they send promotional texts, etc.).

Their customer support number literally disappeared as I watched.

I re-added the phone number.

A little later, their headquarters address disappeared.

What is going on?

 

[Reverend Benny]

Okay, I am in disbelief right now.

I just added a contact. In this case, a company, not that that matters.

I added their customer support number and the 5-digit short code (from which they send promotional texts, etc.).

Their customer support number literally disappeared as I watched.

I re-added the phone number.

A little later, their headquarters address disappeared.

What is going on?

Is this "your" contact list (your icloud) or a company phone or private phone that you are connected to exchange mail?
Chek under "contacts" to see if you have more contact accounts than your regular icloud account.
Check if you have given apps permission to read/edit contacts

 

[ThrowerGB]

I'm using my iCloud version of Contacts.app. I've seen something that sounds similar. If I add a new field to a contact, one of the previous fields disappears. It seems to me that what's happening is that the software isn't increasing the vertical space displayed in the window. Instead it seems to overlay rather than inserting. I've fiddled with it and found that moving lines up and down reveals the space it needs. My description here is a bit vague - sorry.
But I just tried it again after updating to macOS 15.2.1 a few days ago and it doesn't act the same way. Now it seems to be able to insert a new field, but not every time. When it doesn't do the insert, it just acts like it's ignoring me.
I've also noticed strange things happening when changing information in a window when that info also appears in other displayed windows. Sometimes when the change is made, the other instances in the other displayed windows don't simultaneously change too. My annoyance suggests Apple played with the mechanism that keeps those fields in sync and only updates when the other displayed window becomes active. I suspect they tried changing the code to make the user interface snappier.
And there's the problem that cropped up several releases ago, macOS 14 or 13? It used to be that if one window was active and I wanted to change or select something in another window, a single mouse click would make the other window active AND make the selection. Now it takes two mouse clicks, one to activate the other window and another click to do the select.