CKEditor should be removed target attribute from the source code

Problem/Motivation

While using the linkit module and add target attribute. When we deselect the checkbox of "Open in new window". The CKEditor has not removed the target="_blank" attribute from the source code.

Steps

Following are the steps to follow to reproduce the bug,
1) Install and enable linkit module (8.x-4.3 version)
2) Add all the configuration. Add Target attribute from Manage Attribute tab.
3) Configure linkit in Text formats and editors (config/content/formats)
4) Add content and add link from select linkit option in CKEditor to given the link with checkbox of "Open in new window". Check the source code of CKEditor.
5) Update link from linkit option in CKEditor and deselect the checkbox of "Open in new window". Check source code of CKEditor.
6) See here, in source code of CKEditor, <p><a href="link" target="_blank">test</a></p> target attribute not be removed.

The response I got in ajax from Linkit module is working fine.

[{"command":"update_build_id","old":"form-l6OjCf7fckIlGn0MpaIdnIDB_N9jXbvW7XGOqhqrA38","new":"form-oi3OYG-UoUkZnHJKjlV0hqguG3T1jgC0TN3my_SzVDQ"},{"command":"editorDialogSave","values":{"attributes":{"href":"#"},"actions":{"save_modal":"Speichern"},"form_build_id":"form-oi3OYG-UoUkZnHJKjlV0hqguG3T1jgC0TN3my_SzVDQ","form_token":"pjof9If17pb4BJbhX7Haj8DcWJk8g9PbU_2sAqYglDU","form_id":"editor_link_dialog","op":"Speichern"}},{"command":"closeDialog","selector":"#drupal-modal","persist":false}]

Proposed resolution

When I deselect the checkbox, CKEditor should be removed target attribute from the source code as well.