Thanks Eric. But it changes according to the size of the drawing-tool (or erasing-tool) you are using. The circle marks the maximum size and the inner part of the crosshair lines marks the minimum. If you use a mouse, that hasn’t got any pressure sensitivity, I understand why the cursor size feels weird.
If you don’t want the cursor that shows the size, you can toggle to the other type of curser, that remains a dot all the time. Shortcut , (comma).