This applies to all levels, all modes, as well as all versions of Refoger.
When viewing through binoculars and leaning, the view through the binoculars is always level, as if the playing is fully upright. The view needs to be rotated to match players lean.
No attachment needed. No further info needed. No more details needed
Grab some binocs, look through them and then lean while still looking through them. There it is. Fix it.