CKEditor HTML converter executed with incorrect language

The issue appears when editing a given translation of a page. if during the edition you open a new browser tab to edit the same page in different translation and you come back to the initial page to add or edit a macro the CKEditor.HTMLConverter is executed using the language of the second translation (new tab) instead of the current one.

In order to reproduce follow these steps: 

• XWiki version: 9.8.1

• Create a page Sandbox.Page (default language: '', translations : EN, FR)
• Set the EN translation content with:

  English content
  

• Set the FR translation content with:

  French content
  

• Create a page Sandbox.TestCKEditor (default language: '', translations : EN, FR)
  • Set the FR translation of the page with

    {{velocity}}
    #set ($reference = $services.model.createDocumentReference("xwiki", ["Sandbox"], "Page"))
    #set ($trReference = $services.model.createDocumentReference($reference, $xcontext.locale))
    #set ($trDoc = $xwiki.getDocument($trReference))
    $trDoc.content
    {{/velocity}}
    

• Close all created pages
• Edit the FR translation of the page Sandbox.TestCKEditor, normally you should see "French content" on the editor.
• In a new tab edit the EN translation of the page Sandbox.TestCKEditor
• Go back to the FR translation and insert an info macro with the text : 'test', click on send button
• See the content after the wysiwyg refresh.

Expected behavior:
The content displayed is the content of the FR translation of the page Sandbox.Page followed by info macro with 'test'.

Current behavior:
The content displayed is the content of the EN translation of the page Sandbox.Page followed by the info macro with 'test'.