message: Lower-right resize grip only appears when hovered.
diff: @@ -4604,7 +4604,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
  if (hovered || held)
  g.MouseCursor = (resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE;
  - if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0])
  + if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0] && resize_grip_n == 0)
  {
  // Manual auto-fit when double-clicking
  size_target = CalcSizeFullWithConstraint(window, size_auto_fit);
  @@ -4617,6 +4617,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
  ImVec2 corner_target = g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize() * grip.CornerPos; // Corner of the window corresponding to our corner grip
  CalcResizePosSizeFromAnyCorner(window, corner_target, grip.CornerPos, &pos_target, &size_target);
  }
  + if (resize_grip_n == 0 || held || hovered)
  resize_grip_col[resize_grip_n] = GetColorU32(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip);
  }
  for (int border_n = 0; border_n < resize_border_count; border_n++)
  