Use of words suggested by the spellchecker is not being save

Steps to reproduce

Add-ons: EPiServer Spellchecker for TinyMCE 1.1.0.8000
CMS 8.3.0

Steps to reproduce

1. Click ABC to activate spell checking
2. Click on a word that has been underlined with red
3. Click on a suggested word. (The word is now switched to the suggested word).
4. Click on a different property on the page
5. The word is now switched back to the original word