The GUI allows only one line for the display of the CONTENT field of DNS TXT records. If the field does not fit, the GUI smudges it onto itself.
(Example of long TXT record: as for google._domainkey.example.com)
(Temporary workaround: can use the API at my.opalstack.com/api/v1/dnsrecord/list/)
(Alternatively, using a monitor with an incredibly wide screen might avoid the problem)