iPrint on OES
iPrint Client for Mac v6.10
macOS Big Sur (11.3.0, 11.3.1, 11.4)
When installing an iPrint printer, the 'iPrint Printer installation' dialog displays garbled text as seen in this example.
The issue was resolved by updating the iPrint Client for Mac to v6.14 which can be downloaded using this link:
The root cause is unknown other than an apparent issue with the iPrint Client for Mac v6.10.