Explorer crash when moving mouse through Start Menu

Explorer crashes by moving the mouse through the start menu
This problem is reproductible and related to function "set_focus_window" in
Win32k
(as per the exception error and win32k.map )
I have posted on my web site the file explorer_crash.txt containing error
messages from Debugport COM (see Url address )
Note 1 : explorer is built using "make" in explorer directory and ran by
"explorer" at the command prompt
Note 2 : The Wine Dlls from Sed web site (wineros.zip) are present in the
system32 directory