I found a solution to this problem. Tinymce maintains a list of characters it will convert, and you can override it:
entities : "60,lt,62,gt,38,amp,34,quot"
Doing that means only those entities are changed, and the other characters are stored in their unicode forms.
Text editors
Tinymce madness
Tato diskuse byla uzavřena, takže již nemůže odpovídat.