Set aside the style of quoting. Everyone has preferences. But inline editing for a quick typo fix is faster and easier. And that is broken too.
Plus with the full editor you have to look at that row of stupid animated emotes.
What's that ?
If you use the Modify message button within the post body there are zero emojis.
You guys can see a "Modify" button next to other peoples posts?
I thought that was only a Moderator tool that lets us edit other people's messages if needed.
The Quote is what you use to reply to and quote a post, and has always worked for me.
No, we can't. Or at least i cannot

But again, there is a difference with another somewhat unknown feature. Again i personally was not even aware of this, and only found it just now when looking for it.
Hit the "Modify" Button at the top right of your post, and the Editor opens on a new page. This works fine, at least it does for me.
But there is also an unlabeled button in the bottom right corner on your posts, directly above the logged IP. Click that, and similar to the Quick Reply window, you can edit your post directly without loading a new page. But after clicking "Save" you are booted to the starting post of the thread, and the change is not saved.
EDIT: Added an image of this post, labeling the buttons i'm reffering to.