Index: reactos/win32ss/user/user32/controls/scrollbar.c
===================================================================
--- reactos/win32ss/user/user32/controls/scrollbar.c	(revision 74931)
+++ reactos/win32ss/user/user32/controls/scrollbar.c	(working copy)
@@ -839,6 +839,7 @@
         ScrollBarInfo.rgstate[ScrollTrackHitTest] |= STATE_SYSTEM_PRESSED;
         NewInfo.rgstate[ScrollTrackHitTest] = ScrollBarInfo.rgstate[ScrollTrackHitTest];
         NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
+        SetScrollPos(Wnd, SBType, ScrollTrackingVal, FALSE);
         break;
 
       case WM_MOUSEMOVE:
@@ -854,7 +855,7 @@
         ScrollBarInfo.rgstate[ScrollTrackHitTest] &= ~STATE_SYSTEM_PRESSED;
         NewInfo.rgstate[ScrollTrackHitTest] = ScrollBarInfo.rgstate[ScrollTrackHitTest];
         NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
-
+        SetScrollPos(Wnd, SBType, ScrollTrackingVal, FALSE);
         IntDrawScrollInterior(Wnd,Dc,SBType,Vertical,&ScrollBarInfo);
         IntDrawScrollArrows(Dc, &ScrollBarInfo, Vertical);
 
@@ -923,6 +924,7 @@
                                                      Vertical, ScrollTrackingPos);
             NewInfo.nTrackPos = ScrollTrackingVal;
             NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
+            SetScrollPos(Wnd, SBType, ScrollTrackingVal, FALSE);
             IntScrollDrawMovingThumb(Dc, &ScrollBarInfo, Vertical);
           }
         else if (Msg == WM_LBUTTONUP)
@@ -953,6 +955,7 @@
                                                          Vertical, ScrollTrackingPos);
                 NewInfo.nTrackPos = ScrollTrackingVal;
                 NtUserSetScrollBarInfo(Wnd, IntScrollGetObjectId(SBType), &NewInfo);
+                SetScrollPos(Wnd, SBType, ScrollTrackingVal, FALSE);
                 IntScrollDrawMovingThumb(Dc, &ScrollBarInfo, Vertical);
                 SendMessageW(WndOwner, Vertical ? WM_VSCROLL : WM_HSCROLL,
                              MAKEWPARAM(SB_THUMBTRACK, ScrollTrackingVal),