Decompiler removes parentheses from math equations when adjacent operations are from the same "level" of order

Describe the bug

When writing math equations, parentheses are used to "override" the order of operations. This is very important when subtracting and dividing, as changing the order (by removal of parentheses) will result in a difference value. The decompiler removes some of these parentheses when variables are present, resulting in undesired values during runtime.

Unsure of how GML handles Order of Operations (Is addition is prioritized before subtraction, or calculated in sequential order?), i ran the following test:

    a = 5
    b = 3
    c = 2
    d = b + c
    debug_draw_var("a - (b + c) = ", (a - d))
    debug_draw_var("a - b + c = ", (a - b + c))

Here is the result of these equations drawn in-game: As shown here, addition and subtraction are performed in sequential order (as it should be).

Here are some examples of how the Bleeding Edge decompiler currently handles parentheses in math equations. Before decompiler:

z = (a - b) + c
z = a - (b + c)
z = a * (b / c)
z = (a * b) / c
z = a + (b - c) * (d / e)
z = (a + b) - (c * d) / e
z = (a + b - c) * (d / e)
z = (a + b) - (c * d / e)
debug_draw_var("5 - 3 + 2 = ", (5 - 3 + 2))
debug_draw_var("5 - (3 + 2) = ", (5 - (3 + 2)))

After decompiler:

z = a - b + c
z = a - b + c
z = a * b / c
z = a * b / c
z = a + (b - c) * d / e
z = a + b - c * d / e
z = (a + b - c) * d / e
z = a + b - c * d / e
debug_draw_var("5 - 3 + 2 = ", 4)
debug_draw_var("5 - (3 + 2) = ", 0)

As can be seen in the debug_draw_var functions, the decompiler respects the parentheses when only real numbers are used, during simplification of the code. It is only when variables are introduced that the parentheses are removed.

Reproducing steps

In the Decompiled code editor, write an equation containing math operators of the same "tier", at least one variable, and parentheses encapsulating a latter section of the equation. e.g. x = a - (b + c)
Apply the change. Notice the resulting code now lacks parentheses.
Run the game, and see that the desired outcome is not achieved when the equation is calculated.

Setup Details

UndertaleModTool version: Bleeding Edge (most recent commit as of this posting: https://github.com/UnderminersTeam/UndertaleModTool/commit/c8e1b9babec8c3130e8211f0190b8e2a9c04de4a) OS: Windows 10 22H2 Game: AM2R, but occurs with any, including new projects

UnderminersTeam / UndertaleModTool