UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1.1 Safari/605.1.15

Steps to reproduce the problem:
1. Create a file called abr.js with the attached code. 
2. Install dependencies: "npm install chrome-remote-interface"
3. Open Chrome with remote debug enabled: " --remote-debugging-port=9222"
4. Run the script: "node abr.js" 
5. open the saved image "scrot.png" 

What is the expected behavior?
The saved snapshot should include the whole list of car brands.

What went wrong?
The snapshot does not show the expanded "select" elements. 

Did this work before? N/A 

Chrome version: 67.0.3396.87 (Official Build) (64-bit)  Channel: n/a
OS Version: OS X 10.12.6
Flash Version: 

A short screen recording have been included to help triage.

Content of script abr.js follows:
-----

const CDP = require('chrome-remote-interface');
const fs = require('fs');

const html = `
<select id="sel">
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="mercedes">Mercedes</option>
  <option value="audi">Audi</option>
</select>
`;

async function test() {
    try {
        const client = await CDP();
        const {Page, Input, Runtime} = client;

        await Page.navigate({url: `https://www.smartload.io/abr.html`});

        Runtime.enable();
        Runtime.consoleAPICalled(({args}) => {
            console.log(args);
        });

	var waitTill = new Date(new Date().getTime() + 2 * 1000);
	while(waitTill > new Date()){}

        await Input.dispatchMouseEvent({
            type: 'mousePressed', button: 'left', clickCount: 1, x: 12, y: 12
        });

        await Input.dispatchMouseEvent({
            type: 'mouseReleased', button: 'left', clickCount: 1, x: 12, y: 12
        });

	console.log("Select expanded");

	waitTill = new Date(new Date().getTime() + 2 * 1000);
	while(waitTill > new Date()){}

	const {data} = await Page.captureScreenshot();
        fs.writeFileSync('scrot.png', Buffer.from(data, 'base64'));
        console.log("Screenshot done");	

    } catch (err) {
        console.error(err);
    }
}

test();
 

Deleted: My Movie 1 - Medium.mov 4.7 MB

	My Movie 1 - Medium.mov 4.7 MB View Download