Print Language not editable on Invoices, Quotation, ...

[BinaryCraX]

Information about bug

The field language of an Invoice (and other documents) can't be changed after initial creation.
Note: The field language is automatically populated on creation of the document from the customer-settings (that's good).

I would expect to be able to change the language of the document after the creation, because:

• either the customer requested to have the document in another language this time.
• or the language-settings in the customer was wrong while creating the document and got corrected afterwards.

Attempts to customize the form failed, as the form customization tool prohibits changes to the read-only flag.

Module

accounts, selling

Version

Frappe version: v15.41.0
ERPNext version: v15.35.1

Installation method

docker

Relevant log output / Stack trace / Full Error Message.

No response