After an update to joomla 3.5 I got problems with the real estate manager. If I wanted to change or add a new link to a realestatemanager category to my main menu, I got a broken joomla page (see picture). The page lost the isis template and shows no buttons to store the changes or to exit the page.
All other menu changes to content or other joomla components worked perfect. So I had to use my backup and go back to the old installation with joomla 3.4.
My configuration:
Joomla 3.5
Real Estate Manager 3.3.1 PRO
Backend template: Isis
Frontend template: JSN Epic pro