title: Alerting bold Unicode letters turns them into nonsense
body: <p>I am trying to alert bold text and <a href="https://stackoverflow.com/a/60432824/19275492">here</a> nulll suggested using bold unicode.</p>
  <p>So I tried:
  <code>alert('  ');</code> and it worked as expected. But when I tried to use the exact same thing in a different document, it alerts this:</p>
  <p>ð—¡ð—¼ð˜ð—µð—¶ð—»ð—´ ð˜ð—¼ ð—±ð—¼ð˜„ð—»ð—¹ð—¼ð—®ð—±</p>
  <p>What am doing wrong and why does it work in a different document with the exact same code?</p>
  <p>Thank you in advance and sorry for my English</p>