If there is css class applied to link from Hyperlink Manager and try to remove link from text, link is not removed. When you remove css class from link and then try to remove link from text, it will remove link properly.
Steps to reproduce issue:
1. Give link to any text using Hyperlink Manager and also apply any css class.
2. Try to remove link from text using Unlink command. Link will ot be removed.
3. Now first remove class from text to which link is given and then remove link from text, it will be removed properly.
Can you please provide a solution to this issue ?