Puppeteer opens an empty tab in non-headless mode

The solution is to use the existing tab/page (dont open a new one):

// launch the browser
var browser = await puppeteer.launch({ headless: false });

// get existing tab/page (first item in the array)
var [page] = await browser.pages();

// load barcode tracking website
await page.goto('https://orcascan.com');