diff --git a/src/gui/kernel/qplatformtheme.cpp b/src/gui/kernel/qplatformtheme.cpp
index 5de1c98127..34f7307cd7 100644
--- a/src/gui/kernel/qplatformtheme.cpp
+++ b/src/gui/kernel/qplatformtheme.cpp
@@ -163,6 +163,10 @@ QT_BEGIN_NAMESPACE
 
     \value ShowShortcutsInContextMenus (bool) Whether to display shortcut key sequences in context menus.
 
+    \value InteractiveResizeAcrossScreens (bool) Whether using the whole virtual geometry of all the screens
+                        as basis for the resize.
+                        This enum value has been added in Qt 6.2.
+
     \sa themeHint(), QStyle::pixelMetric()
 */
 
@@ -563,6 +567,8 @@ QVariant QPlatformTheme::defaultThemeHint(ThemeHint hint)
         }
     case MouseQuickSelectionThreshold:
         return QVariant(10);
+    case InteractiveResizeAcrossScreens:
+        return true;
     }
     return QVariant();
 }
diff --git a/src/gui/kernel/qplatformtheme.h b/src/gui/kernel/qplatformtheme.h
index d736948969..0b6c0254f0 100644
--- a/src/gui/kernel/qplatformtheme.h
+++ b/src/gui/kernel/qplatformtheme.h
@@ -117,7 +117,8 @@ public:
         TouchDoubleTapDistance,
         ShowShortcutsInContextMenus,
         IconFallbackSearchPaths,
-        MouseQuickSelectionThreshold
+        MouseQuickSelectionThreshold,
+        InteractiveResizeAcrossScreens,
     };
 
     enum DialogType {
diff --git a/src/plugins/platforms/cocoa/qcocoatheme.mm b/src/plugins/platforms/cocoa/qcocoatheme.mm
index f88569df05..1bfa4b73ea 100644
--- a/src/plugins/platforms/cocoa/qcocoatheme.mm
+++ b/src/plugins/platforms/cocoa/qcocoatheme.mm
@@ -519,6 +519,8 @@ QVariant QCocoaTheme::themeHint(ThemeHint hint) const
         return QVariant(int(QTextCharFormat::DotLine));
     case QPlatformTheme::UseFullScreenForPopupMenu:
         return QVariant(bool([[NSApplication sharedApplication] presentationOptions] & NSApplicationPresentationFullScreen));
+    case QPlatformTheme::InteractiveResizeAcrossScreens:
+        return !NSScreen.screensHaveSeparateSpaces;
     default:
         break;
     }
diff --git a/src/widgets/widgets/qsizegrip.cpp b/src/widgets/widgets/qsizegrip.cpp
index be9ec0a580..92042f31df 100644
--- a/src/widgets/widgets/qsizegrip.cpp
+++ b/src/widgets/widgets/qsizegrip.cpp
@@ -50,6 +50,8 @@
 #include "qdebug.h"
 
 #include <private/qwidget_p.h>
+#include "private/qapplication_p.h"
+#include <qpa/qplatformtheme.h>
 #include <QtWidgets/qabstractscrollarea.h>
 
 QT_BEGIN_NAMESPACE
@@ -313,8 +315,12 @@ void QSizeGrip::mousePressEvent(QMouseEvent * e)
     QRect availableGeometry;
     bool hasVerticalSizeConstraint = true;
     bool hasHorizontalSizeConstraint = true;
-    if (tlw->isWindow())
-        availableGeometry = QWidgetPrivate::availableScreenGeometry(tlw);
+    if (tlw->isWindow()) {
+        if (QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::InteractiveResizeAcrossScreens).toBool())
+            availableGeometry = tlw->screen()->availableVirtualGeometry();
+        else
+            availableGeometry = QWidgetPrivate::availableScreenGeometry(tlw);
+    }
     else {
         const QWidget *tlwParent = tlw->parentWidget();
         // Check if tlw is inside QAbstractScrollArea/QScrollArea.