Hi there, I have just started exploring the new Spreadsheet beta, really love this new control that is now available. One point to note is that I've noticed how the button icons have this formatting issue. Other than Nova which works perfectly, the rest seems to have this "^" arrow icon. This is from the theme wise, I am still working on the other functionalities and do up a video for exploring the spreadsheet control and share it with the community. More feedbacks coming...stay tuned for the content on my blog: http://www.theprogrammingnerd.com