Yes I use gdb on Windows. Inscapec.exe gives nothig.

All messages, captured by gdb:


Program received signal SIGSEGV, Segmentation fault.
0x63a62287 in g_type_check_instance ()
   from C:\inkscape\074p3\libgobject-2.0-0.dll
(gdb) next
Single stepping until exit from function g_type_check_instance,
which has no line number information.
0x7c90e480 in ntdll!LdrDisableThreadCalloutsForDll ()
   from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!LdrDisableThreadCalloutsForDll,
which has no line number information.
0x7c92a970 in towlower () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function towlower,
which has no line number information.
0x7c9033dc in ntdll!RtlCheckRegistryKey () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlCheckRegistryKey,
which has no line number information.
0x7c92a99f in towlower () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function towlower,
which has no line number information.
0x7c9033f8 in ntdll!RtlCheckRegistryKey () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlCheckRegistryKey,
which has no line number information.
0x7c92a9a4 in towlower () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function towlower,
which has no line number information.
0x7c901118 in ntdll!RtlUnhandledExceptionFilter ()
   from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlUnhandledExceptionFilter,
which has no line number information.
0x7c92aac7 in towlower () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function towlower,
which has no line number information.
0x7c910339 in ntdll!RtlInitAnsiString () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlInitAnsiString,
which has no line number information.
0x7c9102d9 in ntdll!RtlAppendStringToString ()
   from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlAppendStringToString,
which has no line number information.
0x7c90e8cb in strchr () from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function strchr,
which has no line number information.
0x7c9102e5 in ntdll!RtlAppendStringToString ()
   from C:\WINDOWS\system32\ntdll.dll
(gdb)
Single stepping until exit from function ntdll!RtlAppendStringToString,
which has no line number information.

Program received signal SIGSEGV, Segmentation fault.
0x63a62287 in g_type_check_instance ()
   from C:\inkscape\074p3\libgobject-2.0-0.dll
(gdb)
Single stepping until exit from function g_type_check_instance,
which has no line number information.

Program exited with code 030000000005.
(gdb)
The program is not being run.



That's all.  

I have several Inkscape version on my windows PC (0.46 official relese, 0.46+devel r20539, 0.46+devel r21627, 0.46+devel 22040 and 0.47pre3). 0.46+devel 22040 and 0.47pre3 both have this issue but on 0.47pre3 the bug happens more frequently.

I know that when adjusting color via gestures mouse pointer should change (for hue it's something like (H+/-)) but it doesn't change in any versions mentioned above.