[Bug] Emojis lag in codeblocks

[Muatex]

Issue: When I try to send an emoji after sending a `, the emoji starts moving around and when I type the text goes in the opposite direction and the emoji starts shaking.

Steps to reproduce:

1. Create a code block using ```
2. Add some text and an emoji (ex. \`\`\` fdhshf 👀)
3. the text starts lagging out