Used editor has severe accessibility issue

Hello.
In my accessibility review, i unfortunately found this bug: https://github.com/codemirror/CodeMirror/issues/4604
Someone found a somewhat ugly (but better than nothing) hack: https://bgrins.github.io/codemirror-accessible/
But overall, i suppose that moving to something else (or at least adding a checkbox which would revert the editor to a simple textarea) would not happen easily?

Start by reviewing the linked CodeMirror issue 4604 and the CodeMirror accessible demo to understand the reported accessibility problem and existing workaround. The issue does not name files, tests, or a specific implementation path, and completion would require deciding between changing the editor and providing a textarea option.

Written by the indexing model from the issue text.