Some idea about this?
Particularly, Do you face also the height issue?
I have issues like this in rich:editor with height and width in percentage...Only worked with absolute height and width with rich:editor "height" and "width" attributes (only accepts a number).
did you try a height lower than 80 for instance...
about height issues. From the beggining check tinyMCE documentation. We changed nothing in client side widget code so if the limitation exist within the tiny - it exist with our component for sure.