Why are emojis not working in Chrome Extension popups?

Question

In the extension popup HTML I have placed an emoji, like this:

<div> 🔎 <input id="user_input" autofocus> </div

But when I open the extension popup, this shows up:

I'd really like to use emojis in the extension HTML document. I there a way to get around this issue?

Answer 1

Saving the file as UTF8 with BOM fixed it.