diff --git a/modules/juce_gui_basics/native/juce_win32_Windowing.cpp b/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
index 920e16ee72..cada40a6b1 100644
--- a/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
+++ b/modules/juce_gui_basics/native/juce_win32_Windowing.cpp
@@ -782,6 +782,9 @@ public:
 
         if (isFullScreen() != shouldBeFullScreen)
         {
+            if (constrainer != nullptr)
+                constrainer->resizeStart();
+
             fullScreen = shouldBeFullScreen;
             const WeakReference<Component> deletionChecker (&component);
 
@@ -805,6 +808,9 @@ public:
 
             if (deletionChecker != nullptr)
                 handleMovedOrResized();
+
+            if (constrainer != nullptr)
+                constrainer->resizeEnd();
         }
     }