IsMouseButtonPressed() does not correctly detect the MOUSE_BUTTON_BACK

[syarifhsb]

I have an issue using IsMouseButtonPressed() with raylib.

I try checking the buttons, and the mouse back button is of index 3 instead of the index 6 in MouseButton enum.

        for (int i = 0; i < 8; i++) {
            if (IsMouseButtonPressed(i))
                printf("button: %d\n", i);
        }

I am trying to understand what the is. Is it my Linux machine that is not correctly map my mouse ? Does it mean that I cannot use IsMouseButtonPressed() reliably for mouse extra buttons?

Thanks !