Intermittent error Module 'WrappedSelection' failed to load

[nikmaslik]

Intermittent error after CKEditor upgrade to 4.7.3. It works fine in 4.5.10.

Module 'WrappedSelection' failed to load: Unspecified error.
Error: Unspecified error.
at Anonymous function (/js/ckeditor/ckeditor.js:1029:89)
at Anonymous function (/js/ckeditor/ckeditor.js:1028:140)
at Anonymous function (/js/ckeditor/ckeditor.js:958:344)
at x.prototype.init (/js/ckeditor/ckeditor.js:964:23)
at q (/js/ckeditor/ckeditor.js:957:135)
at w (/js/ckeditor/ckeditor.js:1045:195)

As result, the plugin is not set properly.

Browser: IE11