Html editing features do not work

Hey there!

Thank you for offering this plugin for free!

The problem:

If I enable the html editor in the settings, try to use any of the possible style options (bold, cursiv, list…) and save the changed product. The before styled subtitle changes to just ordinary plain text. Long story short: The html editing features do not work.

Thanks for you help and time!

Greetings from Austria,
Samuel