I try to add styles to combo in Rich Text Editor and after that RTE stop working.
After some debuging I find out that browsers like Firefox and Chrome don't allow to call cssRules on external css files and this java script fails, it cause that rte don't work.
The enhancement request is in place to support external resources.
As a workaround overlay richtext.js and modify to .
rules = styleToCheck.cssRules;
ruleCnt = rules.length;
Retrieving data ...