This looks like a bug, and happens in ST 2.x as well as the latest 3 (3066) build.
If I have a folded section of code, then select some text underneath and slide it up (using ctrl+shift+up) things go haywire when the selected region hits the folded region. What’s seen on the screen at this point no longer reflects the actual source.
Expected behaviour is that the slide jumps past the fold. The same problem occurs in the reverse direction - ie. select text above, slide down through folded region.
