Index: reactos/win32ss/user/ntuser/display.c
===================================================================
--- reactos/win32ss/user/ntuser/display.c	(revision 71501)
+++ reactos/win32ss/user/ntuser/display.c	(working copy)
@@ -10,6 +10,7 @@
 DBG_DEFAULT_CHANNEL(UserDisplay);
 
 BOOL gbBaseVideo = 0;
+static PPROCESSINFO gpFullscreen = NULL;
 
 static const PWCHAR KEY_VIDEO = L"\\Registry\\Machine\\HARDWARE\\DEVICEMAP\\VIDEO";
 
@@ -650,6 +651,17 @@
     return Status;
 }
 
+VOID
+APIENTRY
+UserUpdateFullscreen(
+    DWORD flags)
+{
+    if (flags & CDS_FULLSCREEN)
+        gpFullscreen = gptiCurrent->ppi;
+    else
+        gpFullscreen = NULL;
+}
+
 LONG
 APIENTRY
 UserChangeDisplaySettings(
@@ -774,6 +786,8 @@
             goto leave;
         }
 
+        UserUpdateFullscreen(flags);
+
         /* Update the system metrics */
         InitMetrics();
 
@@ -809,6 +823,19 @@
     return lResult;
 }
 
+VOID
+APIENTRY
+UserDisplayNotifyShutdown(
+    PPROCESSINFO ppiCurrent)
+{
+    if (ppiCurrent == gpFullscreen)
+    {
+        UserChangeDisplaySettings(NULL, NULL, 0, NULL);
+        if (gpFullscreen)
+            ERR("Failed to restore display mode!\n");
+    }
+}
+
 LONG
 APIENTRY
 NtUserChangeDisplaySettings(
Index: reactos/win32ss/user/ntuser/main.c
===================================================================
--- reactos/win32ss/user/ntuser/main.c	(revision 71501)
+++ reactos/win32ss/user/ntuser/main.c	(working copy)
@@ -677,6 +677,10 @@
     return Status;
 }
 
+VOID
+APIENTRY
+UserDisplayNotifyShutdown(PPROCESSINFO ppiCurrent);
+
 NTSTATUS
 NTAPI
 ExitThreadCallback(PETHREAD Thread)
@@ -806,6 +810,11 @@
        gptiForeground = NULL;
     }
 
+    /* Restore display mode when we are the last thread, and we changed it */
+    if (ppiCurrent->cThreads == 0)
+        UserDisplayNotifyShutdown(ppiCurrent);
+
+
     // Fixes CORE-6384 & CORE-7030.
 /*    if (ptiLastInput == ptiCurrent)
     {