can you Right Click > Inspect the browser to open the developers tools, and view the Console Tab.
Then try editing a block. Do any errors appear in the Console.
Here’s the console log.
Nothing out of the ordinary I think.
companion-bubble error seems to be happening on every page when I’m browsing under /wp-admin/.
Yes, exaclty. And there is no problem with freezing when I click update after that I’ve made some changes.
I’ll just have to wait for it to load, probably something to do with my custom shortcodes or that I have lots of posts.