Selector is failing for non standard HTML tags

[deepnov]

The function returns empty remoteObjects when non standard HTML tags from reddit.com are parsed by element2selector function.

Code Snippet below:
const selector = await element2selector(element);
console.log(Current Elem: ${selector});
const { result: remoteObject } = await client.send('Runtime.evaluate', {
expression: 'document.querySelector(' + selector + ')'
});

Example elements below:

Current Elem: .pt-[var(--page-y-padding)]
Tag : SHREDDIT-APP

Current Elem: .nd:visible:nth-child(2) > .nd:visible
Tag : FACEPLATE-TOOLTIP