TinyMCE Editor Disappeared from Email Templates After 10.0.4 Upgrade

Hi Everyone,

We recently upgraded our Sugar instance to version 10.0.4. Everything works great except the TinyMCE toolbar has disappeared from the email template editor. Has this happened to anyone else or does anyone know anything we can check? I have attached a picture of the toolbar that is missing.

Went from Sugar Professional 10.0.3 to 10.0.4 on premise.