Character Animation (Preview 1 and 2) both have problem with the Windows Display scaling. On my Thinkpad running Windows 8.1 and the display scaling set at 125%, the buttons at the bottom of the Camera and Microphone panel disappeared. If the display scaling is set at 150%, the buttons appeared but the whole UI is very blurry. Below are 2 screenshots. First one is when display is at 125% and the second one is when display is at 150%.
Thanks for letting us know. Yeah, we couldn't get the work to support different DPI settings on Windows into Preview 2, but we are aware of these issues and hope to address them in a future release.