I'm using lightning-output-field to output some of my record's field.
It is known that if a field's type is lookup, the component of the field input will have a placeHolder which says 'Searching objectName...'
But I meet a issue that some of the fileds will not show the name of the Object, instead it will show 'Searching undefined...' Other lookup fields will show properly, however. I can not tell what's the difference between these fields.
// this one shows properly <lightning-input-field variant="standard" disabled field-name="RF_PROPERLY__c"> </lightning-input-field> // this one shows undefined. The code is the same. <lightning-input-field variant="standard" disabled field-name="RF_UNDIFINED__c"> </lightning-input-field>