Eventfinder-RSVP sends html email as plain text

Even if i enable html email in settings>>eventfinder
when i send an rsvp with tinyMCE it appears as plain text and all html code is visible.
this happens on drupal 4.6.3 - civicspace .8.2 rc6 with eventfinder 4.6.0 or cvs
rsvp is 4.6.0 as cvs doesnt work with 4.6.3

am i the only one seeing this?

thanks
ryan grace.