You found that the amount fields in CEF Client do not support formatting with a thousands-place separator. In the functions Trial Balance & Ledger Rpts, GL Zoom Inquiry in the General Ledger module, there is no comma separation in the account balances across various screens (IL1, IL2, DS1, IL3, IL4).
This is a bug in the Computron CEF Client that has been fixed in the release CEF client v188.8.131.522.
If you require any assistance in installing this version, you can reach out to your Account Manager directly via email.
You can share the Account Manager contact with the customer by referring to Escalating-to-Management.