Hi Charlie,
The new beta looks great!
I have one immediate issue with the gradients (tested on a header). Pre-installing the beta, the header background used a global color. I have since set a three point gradient and saved it - all good.
However, if I switch back to Solid, the previous global color is no longer used - red #ffff00 is the default. Similarly, if I then switch back to Gradient, my previous selection is gone and I get the default Red/Blue gradient setup.
Thanks,
Christopher