Unexpected Variable Assignment Using Function LocalMode Modern With Nested Closures In Lucee 5.3.2.77

Application.cfc

component
	output = false
	hint = "I define the application settings and event handlers."
	{

	this.name = hash( getCurrentTemplatePath() );

	// By using "modern" localmode, any unscoped variable assignment will be applied to
	// current Function's local scope (never to the Variable's scope).
	this.localmode = "modern";

}

test.cfm

<cfscript>

	echo( "[A] Value: " & test() );

	// ------------------------------------------------------------------------------- //
	// ------------------------------------------------------------------------------- //

	public string function test() {

		var value = "Original";

		(() => {

			// CAUTION: Because the entire Application is running in localmode "modern",
			// this "unscoped assignment" will be applied to the current Local scope,
			// which traps it inside of this closure.
			value = "Changed";

		})();

		return( value );

	}

</cfscript>

test2.cfm

<cfscript>

	echo( "[B] Value: " & test() );

	// ------------------------------------------------------------------------------- //
	// ------------------------------------------------------------------------------- //

	public string function test() {

		var value = "Original";

		(function() localmode = "classic" { // <=== We are overriding LOCALMODE.

			// Since the entire Application is running in localmode "modern", in order
			// for this assignment to affect the local variable of the parent context,
			// we have to override the LocalMode, setting it back to "classic". This
			// will allow Lucee to apply the assignment to the "expected" variable.
			value = "Changed";

		})();

		return( value );

	}

</cfscript>

test3.cfm

<cfscript>

	echo( "[C] Value: " & test() );

	// ------------------------------------------------------------------------------- //
	// ------------------------------------------------------------------------------- //

	public string function test() {

		var value = "Original";

		// Create an "alias" for the Local scope of the current function.
		var context = local;

		(() => {

			// By using the "alias" of the parent function to define the variable
			// assignment, it allows us to "scope" the assignment. So, even though
			// "context" is just a reference to the parent function's Local scope, it's
			// enough to bypass "modern" mode.
			context.value = "Changed";

		})();

		return( value );

	}

</cfscript>