ScrollView: Do not change offset in directionless focus change

cursive-core/src/views/scroll_view.rs

@@ -370,10 +370,13 @@ where
     fn take_focus(&mut self, source: Direction) -> bool {
         // If the inner view takes focus, re-align the important area.
         if self.inner.take_focus(source) {
+            // Don't do anything if we come from `None`
+            if source != Direction::none() {
                 self.scroll_to_important_area();
 
                 // Note: we can't really return an `EventResult` here :(
                 self.on_scroll_callback();
+            }
             true
         } else {
             self.core.is_scrolling().any()