Ella van Durpe notes that the…

ByDan Knauss Posted on Updated on

Ella van Durpe notes that the new template editor in WordPress 5.8 is loaded in an iframe to isolate it from the rest of the admin screen.

This has a few advantages: admin styles no longer affect the editor content and make “the lives of block and theme authors easier because styles from the front-end can be dropped in with very little, if nothing, to adjust.”