Emoji bracket issue

[jcubic]

Actual behavior

There is extra closing bracket when typing emoji

Steps to reproduce

1. Open Emoji Demo https://codepen.io/jcubic/pen/qPVMPg
2. type :smile:
3. move cursor so it's on emoji (the real cursor will be at 0, so you can type before emoji)
4. there is extra closing bracket after emoji