Pressing S Disables Jet Afterburner Regardless of Custom Keybindings

Pressing the "S" key disables the jet's afterburner, even though I have bound Throttle Down to a completely different key. It appears 'S' retains a hardcoded function to disengage the afterburner, ignoring custom assignments.

This forces an unintentional exit from afterburner mode. Consequently, players cannot assign other functions to the 'S' key without constantly interrupting their afterburner state.