Thanks for your efforts to test the application, we will take a look at these issues and sure will try to fix these issues. Freoffice does not support rtf, abw rest all should be supported, if not it is a clear bug we need to fix. BTW The work done in freoffice is done mainly in upstream so everyone are welcome to join in and contribute. If you have some nice idea or a request for feature please add it to this discussion thread we will look into it. If you would like to contribute, You can also find most of us in our IRC channel #freoffice on freenode server.