Autogrow in not working with CKEditor4 and Firefox (using v18.0.1), but it is working with Chrome.
Here is my config:
config.extraPlugins = 'autogrow';
config.removePlugins = 'resize';
config.autoGrow_bottomSpace = 30;
config.autoGrow_onStartup = true;
While it works on the builder page, that page isn't really helpful in showing you which configuration code is being used with the examples.
Any ideas?