The setup editor will automatically remove parentheses that are not logically necessary.
The GSE will only display parentheses in a rule block if they are logically required, and will remove them if they are not.
For example the following would keep the parentheses
if value > (1 + 2) * (3 + 4) then
if value > (1 * 2) + (3 * 4) then
this formats to:
if value > 1 * 2 + 3 * 4 then