Problem with Spell Checker functionality when page contains multiple CKEditor instances rendedred using KO databinding

I have a web application with a page having multiple CKEditors embedded within it, using KO binding. The functionality requires use of "Spell Checker", so I am using the "Webspellchecker".

Pre-requisite: 3 CKEditors on the page with some text

Steps:

• Click on "SpellChecker" icon inside first editor toolbar and close the dialog
• Click on the 2nd editors "spell checker" button and then close the dialog
• Same steps for the 3rd editor.
• Now click on the spell checker button of the first/second editor.
• Issue is that first/second editor spell checker dialog will pick up the text of the 3rd editor that we opened earlier and is not displaying the text of the related editor.

Please suggest any solution so that the spell checker picks up the right content for performing the spell check.