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packages/app/src/styles/theme/_apply-colors-light.scss

@@ -180,6 +180,7 @@ $dropdown-link-active-bg: $bgcolor-dropdown-link-active;
   @include override-list-group-item($color-list, $bgcolor-sidebar-list-group, $color-list-hover, $bgcolor-list-hover, $color-list-active, $bgcolor-list-active);
   // sidebar-centent-bg
   .grw-navigation-wrap {
+    // Drop a shadow on the light theme. The dark theme makes '$ bgcolor-sidebar-context' brighter than the body.
     box-shadow: 0px 0px 3px rgba(black, 0.24);
   }
   // Pagetree