[SalesForce] LWC – error adding a targetConfigs into metadata (The ‘targetConfig’ tag doesn’t support text.)

I think that the results are stored under the data property, so it would be contacts.data instead of just contacts in your iteration:

<template for:each={contacts.data} for:item="contact">
    <p key={contact.Id}>{contact.Name}</p>
</template>

More about this here.

After further testing, it turns out that the optionalFields property is more restrictive in the update. If an optional field is listed when not looking at the correct record type, it will prevent the wired method from running again when the recordId is updated. In our case, we use the component in both the Case page and Contact page. We had one wire/getRecord method that listed optionalFields for both the Case and Contact record types. After removing the contact fields, the components began loading correctly on the Case page.

To remedy the issue, for now, two separate wire methods were created. One for the Contact page and the other for the Case page.

Old Code:

@wire(getRecord, {
    recordId: "$recordId",
    optionalFields: [
        "Contact.Name",
        "Case.Contact.Name"
    ]
})

New Code:

@wire(getRecord, {
    recordId: "$recordId",
    optionalFields: [
        "Contact.Name"
    ]
})

@wire(getRecord, {
    recordId: "$recordId",
    optionalFields: [
        "Case.Contact.Name"
    ]
})