For example, looking at https://terminology.hl7.org/CodeSystem-v3-loinc.html, we see that one of the fields reads:

Other Identifiers: OID:2.16.840.1.113883.6.1, IRI stem (use: official, )
      

This appears to be coming from:

https://github.com/HL7/ig-template-base/blob/e1ff5036286f69200567d586ac4afaaac216b9c7/includes/fragment-resourceTable.html#L93

But it's unclear where and how an identifier is converted to text. But we should try to figure out what's going on there and see if we can fix it.

(Note that NamingSystems do display identifiers without any problems, but that is a complete different data type.)