Form cmdb_identifier_entry does not show the Madrid field hybrid_entry_ci_criterion_attributes, and when it is added to the form manually it doesn't work. You can see that the field value flashes for a half second and then vanishes.
If you attempt to edit the value you can't and the editor widget shows no candidate nor current values.
Madrid (All versions)
The reason for this issue is that an additional column applies_to to the form layout for the form cmdb_identifier_entry.
The workaround to this issue is to add the Identifier.applies_to field in the Form Layout of table cmdb_identifier_entry.