I'm not using any custom model class. This was working before and seemed to quit working when I checked out this latest branch. To add the Text Editor component, I typically click the component underneath and click the plus (+) sign to add 'Text Editor'.
@Prince_Shivhare - I'm trying to add the Text Editor component. I'm relatively new to AEM and am not sure what is meant by parsys or responsive grid. I've been adding components by clicking the component beneath where I want the new component and click the plus (+) sign to add the component.