Sketch on an origin plane faces the side you clicked (#1587)

Fixes #1586.

crates/doc/src/eval.rs

@@ -3998,6 +3998,9 @@ pub(crate) fn sheet_face_plane_in_frame(doc: &Document, st: &ModelState, comp: u
             axis_dir: *axis_dir,
             angle: angle.clone(),
         },
+        PlaneRef::Flipped { base, about_y } => {
+            PlaneRef::Flipped { base: Box::new(sheet_face_plane_in_frame(doc, st, comp, base)?), about_y: *about_y }
+        }
         other => other.clone(),
     })
 }