In the new task window, The month arrows in the deadline date picker are hard to click as they are quite small. The click outside the arrow area closes the date picker popup.

Here is a short video to demonstrate the issue:
http://monosnap.com/file/D7DraFxcwuFAQqOrxwRlyrhTg1QbUQ

It would be great if you make the arrows bigger or make the clickable area wider.

Thanks.