问题 I am trying to create an "enhanced" select element by slotting contents using Shadow dom into it. This is the file (the full code is in in Glitch: import { LitElement, html } from 'lit-element' export class Select extends LitElement { render () { return html` <select id="_native"> <slot></slot> </select> ` } } customElements.define('nn-select', Select) However, nothing seems to get slotted. Renaming select into select2 "solves" the problem. Is there a limitation so that we cannot <slot> into