Hovering over any Adobe Reader 9 window control stalls the system

Setup EXE can be obtained from https://www.dropbox.com/s/h78tenjldpmq0s5/AdbeRdr90_en_US.exe

VirtualBox 4.2.12, ReactOS 0.3.15RC2

If I start Adobe Reader 9 and hover over menu/toolbar, it stalls the system, in log there are tons of
(C:/Users/Z98/workspace/reactos/0.3.15/ntoskrnl/ob/obwait.c:168) Invalid handle passed to NtWaitForMultipleObjects

This is a regression since 0.3.13, on which it reportedly worked.

Attached "normal" debug log and then log with first-chance exceptions enabled. In first-chance log there are two exceptions in
ReactOS/win32ss/gdi/ntgdi/dcutil.c:560 (NtGdiSetBoundsRect@12))