During interactive S&R, Slick previews the change by showing the proposed change in red text below.
This overlay can mix with existing text and be visually confusing. See the attached images for an example - where the overlay is on top of the line below in a confusing way.
I'd like Slick to push the text below down to avoid the overlay entirely - something like what Diff does with "imaginary lines".
Alternately, expand the red-text box - make it wider than necessary to give it some margins on the left and right.