Overview
Some of default styles on the editor web component are broken or missing broken, this means unless they are all explictly define in the theme (like in Editor Standalone) the Editor can appear to have missing style - this causes problems on the projects site for example which does not use the editor theme.
Here is a quick visual of the errors - see in more detail in Figjam:

Projects site related issues:
Overview
Some of default styles on the editor web component are broken or missing broken, this means unless they are all explictly define in the theme (like in Editor Standalone) the Editor can appear to have missing style - this causes problems on the projects site for example which does not use the editor theme.
Here is a quick visual of the errors - see in more detail in Figjam:
Projects site related issues: