hi. dear support there are a few bugs that I encountered:
font doesn't change from xaml and I needed to change it in css.
grid row definitions height has the problem where no matter what is the value you assign with *, first row always is 1* and the rest are 0 when rendered.
border's bug is that if it is in grid and you give corner radius a value, it remains the same. you need to put it in another border in order to round the corners of inner border. it's also the same when you want to assign composition transform! you need to assign it to outer one or the corner radius will be ignored.