Problem : If you select one freehand path on a vector layer, Scale Styles is activated as shown below, and you can check or uncheck it.
However, if multiple freehand paths are selected, the Scale Styles is deactivated as shown in the figure below, and Scale Styles cannot be unchecked.
Solution : It would be nice to have the option activated so that you can uncheck the Scale Styles even when multiple freehand paths are selected.