Can we have an option to stabilise the windows for controlling the Radius, Threshold, and Opacity of the masking brush while we are adjusting them? And to be able to use the up and down arrow keys to increase or decrease the values? At present, I have to mouse upwards and right or left from the current value without passing over either of the other two to get to the window in which I can make the adjustment. If I accidentally pass the mouse cursor over either of the other two controls (it looks as though I have to avoid the title box as well as the value), then the window that will open is for the wrong brush parameter.
So, now I have asked politely, can I just add that I find the current behaviour ANNOYING.
Happy New Year 2021!