Assertion '(pti->pcti->fsChangeBits & QS_SENDMESSAGE) == 0' failed

Assertion '(pti->pcti->fsChangeBits & QS_SENDMESSAGE) == 0' failed at /srv/build

bot/Trunk_x86_GCCLin_Debug/build/win32ss/user/ntuser/misc.c line 666

Entered debugger on embedded INT3 at 0x0008:0x80961542.

kdb:> bt

Eip:

<NTOSKRNL.EXE:161543 (:0 (DbgBreakPoint))>

Frames:

<win32k.sys:5c7ce (win32ss/user/ntuser/misc.c:666 (UserDbgAssertThreadInfo))>

<win32k.sys:5c872 (win32ss/user/ntuser/misc.c:705 (UserDbgPostServiceHook))>

<win32k.sys:16ae2 (win32ss/user/ntuser/main.c:51 (DbgPostServiceHook))>

<NTOSKRNL.EXE:149be5 (ntoskrnl/ke/i386/traphdlr.c:1591 (KiSystemServiceHandler))

>

<NTOSKRNL.EXE:3d95 (:0 (KiFastCallEntry))>

<ntdll.dll:c85d (:0 (KiIntSystemCall))>

<user32.dll:460fd (win32ss/user/user32/windows/font.c:1134 (DrawTextExW))>

<user32.dll:47f00 (win32ss/user/user32/windows/font.c:1400 (DrawTextW))>

<comctl32.dll:71fcd (dll/win32/comctl32/toolbar.c:603 (TOOLBAR_Refresh))>

<comctl32.dll:75e2c (dll/win32/comctl32/toolbar.c:6347 (ToolbarWindowProc))>

<user32.dll:5df47 (win32ss/user/user32/windows/message.c:1502 (IntCallWindowProcW))>

<user32.dll:5e4fc (win32ss/user/user32/windows/message.c:1816 (CallWindowProcW))>

<explorer.exe:2545a (lib/atl/atlwin.h:441 (CWindowImplBaseT<ATL::CWindow, ATL::CWinTraits<1442840576ul, 0ul> >::WindowProc))>

<user32.dll:5df47 (win32ss/user/user32/windows/message.c:1502 (IntCallWindowProcW))>

<user32.dll:5fc65 (win32ss/user/user32/windows/message.c:2926 (User32CallWindowProcFromKernel))>

<ntdll.dll:c7b0 (:0 (KiUserCallbackDispatcher))>

<explorer.exe:5b02 (base/shell/explorer/traywnd.cpp:2926 (TrayMessageLoop))>

<explorer.exe:17a6 (base/shell/explorer/explorer.cpp:177 (StartWithDesktop))>

<explorer.exe:18ef (base/shell/explorer/explorer.cpp:224 (wWinMain))>

<explorer.exe:10a18 (ReactOS/lib/sdk/crt/startup/crt0_w.c:24 (wmain))>--- Press q to abort, any other key to continue ---

<explorer.exe:fae4 (ReactOS/lib/sdk/crt/startup/crtexe.c:307 (__tmainCRTStartup))>

<explorer.exe:fb2d (ReactOS/lib/sdk/crt/startup/crtexe.c:168 (wWinMainCRTStartup))>

<kernel32.dll:fb90 (dll/win32/kernel32/client/proc.c:472 (BaseProcessStartup))>

<00000000>

kdb:> cont