Problems with Time.Moment().compare(Time.moment())

Hi,

Seeing some odd behaviour with Time calculations not returning Number, as per the documentation. https://developer.garmin.com/connect-iq/api-docs/Toybox/Time/Moment.html#compare-instance_function

This then triggers an unrecoverable error if the output is used within a subsequent Time calculation:

ERROR: Unhandled Exception
DETAILS: NONE
STORE_ID: 
CALLSTACK:
UnexpectedTypeException: Expected an object of type Time.Duration
native function

It looks like the ultimate cause might be a problem with Time.Moment.add();

For example:

function momentNType(moment) {
	var n = moment.value();
	System.println(moment+" has value of "+n);
	nType(n);
}
function nType(n) {
	System.println(n+" is Number? "+(n instanceof Number)+" Long? "+(n instanceof Long));
}
function getOClock(nHoursAgo) {
	var nowTime = Time.now();
	var info = Gregorian.info(nowTime,Time.FORMAT_SHORT);
	var adjustSeconds = (nHoursAgo-1)*3600 + info.min*60 + info.sec;
	System.println("CALCULATE OCLOCK WITH "+nHoursAgo);
	nType(adjustSeconds);
	// Subtracting a Duration from a Moment was not supported until ConnectIQ 3.0.0. 
	// If backward compatibility is a concern, it may be best to add a negative Duration instead.
	return nowTime.add(new Time.Duration(-adjustSeconds));
}

// And then...
var heartTime = getOClock(heartGraphInSeconds/3600); // Time.Moment
var difference = Time.now().compare(heartTime);
System.println("Output from getOClock method");
momentNType(heartTime);
System.println("GETS");
nType(difference);

///////////////////////////
// CONSOLE OUTPUT

Output from getOClock method
Obj: 192 has value of 1599465600
1599465600 is Number? false Long? true
GETS
3928 is Number? false Long? true

G