message: Nav: Tweak windowing highlighting for full viewport windows.
diff: @@ -5999,11 +5999,15 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
  // Draw navigation selection/windowing rectangle border
  if (g.NavWindowingTarget == window)
  {
  + float rounding = ImMax(window->WindowRounding, g.Style.WindowRounding);
  ImRect bb = window->Rect();
  bb.Expand(g.FontSize);
  - if (bb.Contains(viewport_rect))
  - bb.Expand(-g.FontSize - 2.0f);
  - window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_NavWindowingHighlight, g.NavWindowingHighlightAlpha), g.Style.WindowRounding, ~0, 3.0f);
  + if (bb.Contains(viewport_rect)) // If a window fits the entire viewport, adjust its highlight inward
  + {
  + bb.Expand(-g.FontSize - 1.0f);
  + rounding = window->WindowRounding;
  + }
  + window->DrawList->AddRect(bb.Min, bb.Max, GetColorU32(ImGuiCol_NavWindowingHighlight, g.NavWindowingHighlightAlpha), rounding, ~0, 3.0f);
  }
  // Store a backup of SizeFull which we will use next frame to decide if we need scrollbars.
  