Thanks for the feedback ricardo777 we will get those fixed
RoundcubePlus http://roundcubeplus.com/ is an upcoming plugins & apps for roundcube. Since myroundcube stopped supporting plugins we have taken up the challenge. All our plugins are designed & programmed from scratch, shared calendars, dropbox & google drive integration, beautiful business signatures and much more coming soon...
RoundCubeSkins.net (which gets themes from RoundCubePlus) are probably the best RoundCube Responsive-Design themes out there.
For the amount of time you spend on the alteration of your own RoundCube theme, getting RoundCubePlus.com themes are a great deal.
The response times of the designers are slow, but overall, the Themes are great. Highly recommended.