Having problems with quickly closing a macro

[AshesOfHegemony]

Im trying to learn LibreAutomate. I created small macro to spam spacebar every 20 milliseconds. I set it to toggle on hotkey press (Shift + Numpad+). It works and runs as intended, but if i run it for longer than a few seconds it takes multiple attempts to toggle it off. I'm not sure what im doing wrong here or if this is a limitation of the LibreAutomate itself?
 

Code:

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/*/ ifRunning end; /*/
script.setup(trayIcon: true, sleepExit: true, exitKey: KKey.MediaStop, pauseKey: KKey.MediaPlayPause);

sound.speak("Toggle On");
bool toggle = false;
while (!toggle)
{
    keys.send("Space");
}

The hotkey is assigned in the "hotkey triggers" file
 

Code:

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using Au.Triggers;

partial class Program {
    [Triggers]
    void HotkeyTriggers() {
        var hk = Triggers.Hotkey;
        
        //Add hotkey triggers here.
        //To add triggers can be used triggerSnippet or menu TT > New trigger.
        //To add trigger scopes (window, program) can be used Ctrl+Shift+Q.
        //Click the Run button to apply changes after editing.
        //More info in Cookbook.
        
        hk["Ctrl+Shift+T"] = o => Triggers.ShowTriggersListWindow();

        hk["Shift+Add"] = o => script.run(@"Game Spacebar.cs");

..........

Any help would be appreciated.