Fix scroll track (#9508)

helix-term/src/ui/menu.rs

@@ -427,6 +427,7 @@ impl<T: Item + 'static> Component for Menu<T> {
                     cell.set_fg(scroll_style.fg.unwrap_or(helix_view::theme::Color::Reset));
                 } else if !render_borders {
                     // Draw scroll track
+                    cell.set_symbol(half_block);
                     cell.set_fg(scroll_style.bg.unwrap_or(helix_view::theme::Color::Reset));
                 }
             }

helix-term/src/ui/popup.rs

@@ -303,6 +303,7 @@ impl<T: Component> Component for Popup<T> {
                         cell.set_fg(scroll_style.fg.unwrap_or(helix_view::theme::Color::Reset));
                     } else if !render_borders {
                         // Draw scroll track
+                        cell.set_symbol(half_block);
                         cell.set_fg(scroll_style.bg.unwrap_or(helix_view::theme::Color::Reset));
                     }
                 }