Sorry Andy another bug...
The Watercolour brush is painfully slow in AR6 compared to previous versions
You can see what I mean here: https://www.dropbox.com/s/3v3wcqsyp6...Brush.mp4?dl=0
In the recording I used the same brush settings in both AR6 and then again in AR5.
I also noted that the brush stroke is slightly wider in AR6, which I like