Memory leaks and handles that cannot be released under Windows

[chp1972]

In Task Manager, you can see that even after using win.dispose(), or even app.exit(), the number of handles does not decrease.
node --expose-gc test.js

import { Application } from '@webviewjs/webview';
let app = new Application();
(async function(){
	await app.whenReady();
	console.log(`#0:rss=`,process.memoryUsage().rss);
	console.log('please check the number of handles in Task Manager');
	await new Promise(ok=>setTimeout(ok,30000));//pause for check
	let list=[];
	for(let i=0;i<50;i++){
		let win=app.createBrowserWindow({
			width:300,height:200,windowsSkipTaskbar:true
		});
		win.createWebview({html:`<h1>${i}</h2>`});
		list.push(win);
	}
	console.log(`#1:rss=`,process.memoryUsage().rss);
	await new Promise(ok=>setTimeout(ok,1000));
	console.log(`#2:rss=`,process.memoryUsage().rss);
	for(let win of list)
		win.dispose();
	list=[];
	global.gc();//need --expose-gc for nodejs
	await new Promise(ok=>setTimeout(ok,1000));
	console.log(`#3:rss=`,process.memoryUsage().rss);
	app.exit();
	app=null;
	await new Promise(ok=>setTimeout(ok,1000));
	console.log(`#4:rss=`,process.memoryUsage().rss);
	console.log('please check the number of handles again');
})()
setTimeout(() => {//keep alive 5 minutes for check count of handles
	console.log('the end');
}, 5*60*1000);