Issues experiencing using the RealSimGear GNS530 in MSFS 2020 since the SU9 upgrade

ok Iknow what you are talking of, it will be solved in next update (looks it will be very soon)

if you need it now you need a little scripting, the device sends only button_press and button_release events, you can initialiaze a local variable with current time on button press, the add a condition to two button_release events if it is less then 1 sec. execute action A if >= action B