After I post, I typically re-read what I wrote to ensure there's no typos. When there is, I go edit it. I'm thinking I like the old way better, where the editor replaced where the text was in the post. This just seems more friendly to me. With the overlay, I have to find the area where I made the typo again, in a space that is a bit smaller.
I'm curious what other people are thinking on this, if thinking about it at all.