Fix the size of the window does not re-scale with the change of the g…

…uiscale.

src/app/modules/gui.cpp

@@ -434,6 +434,9 @@ void load_window_pos(Window* window, const char* section,
   if (get_multiple_displays()) {
     Rect frame = get_config_rect(section, "WindowFrame", gfx::Rect());
     if (!frame.isEmpty()) {
+      // Re-scale the window size.
+      frame.w *= guiscale();
+      frame.h *= guiscale();
       limit_with_workarea(parentDisplay, frame);
       window->loadNativeFrame(frame);
     }
@@ -450,13 +453,19 @@ void save_window_pos(Window* window, const char* section)
   if (!window->lastNativeFrame().isEmpty()) {
     const os::Window* mainNativeWindow = manager->display()->nativeWindow();
     rc = window->lastNativeFrame();
+    // De-scale the window size to save it normalized.
+    rc.w /= guiscale();
+    rc.h /= guiscale();
     set_config_rect(section, "WindowFrame", rc);
     rc.offset(-mainNativeWindow->frame().origin());
     rc /= mainNativeWindow->scale();
   }
   else {
     del_config_value(section, "WindowFrame");
     rc = window->bounds();
+    // De-scale the window size to save it normalized.
+    rc.w /= guiscale();
+    rc.h /= guiscale();
   }
 
   set_config_rect(section, "WindowPos", rc);