When ever I have a line that's longer then the window size its adding a 2nd vertical scroll bar and a scroll bar at the bottom of the page that doesn't stick. Not sure if this was always an issue or something introduced recently but i just noticed it. Screenshot link below.
Oh, indeed, new to me, guess due to some minor GUI changes in factorio.
Should be fixed in 0.0.82, with code window having only one set of horizontal/vertical scrollbars as necessary.
Thanks for reporting!