If I type rsquo; into a textarea and it gets saved via R::store() it saves it to the database.
If I edit this post it shows ' and if I hit save RedBean will strip the quotation and store the empty bean.
What can I do?
Encode it before you give it back to R::store(). See htmlentities.
However, if you never called html_entity_decode yourself, my guess is that you've made some error elsewhere and that your ' is the result of that error.