MrBeast doesn't show up if DeArrow is installed

[Viktini]

Possibly a conflict going on between MrBeastify YouTube and DeArrow.

Steps to reproduce

1. Have both MrBeastify and DeArrow installed
2. Visit YouTube
3. Find that there's no Mr.Beast superimposed onto the thumbnail.

This happens on Mozilla Firefox (er, Pulse Browser) and also happens when thumbnail replacement is disabled on DeArrow's part.