W2K HID "NT Bug" ???

I found this in sw13w2k, an inf that came with the MS Sidewinder FF2:

; The following two sections are necessary to load GcKernel as a lower
filter.
; Current NT bug breaks this (even though technically that’s what we should
be.
; Loading as an FDO works on NT because the HID PDO’s are RAW. So this is
what
; we currently do. To switch back to being a lower filter. Uncomment the
following
; two sections, and switch the commented AddService line in
[GcKernel_Inst.NT.Services].
;[GcKernel_Inst.NT.HW]
;AddReg = GcKernel_Inst.AddReg.NT.HW

;[GcKernel_Inst.AddReg.NT.HW]
;HKR,“LowerFilters”,%REG_MULTI_SZ%,“GcKernel”

[GcKernel_Inst.CopyFiles.NT]
;GcKernel.sys

[GcKernel_Inst.NT.Services]
;AddService = GcKernel,GcKernel_Service_Inst
AddService = GcKernel,%SPSVCINST_ASSOCSERVICE%,GcKernel_Service_Inst

Does anyone know what bug this is refering too and where I might
find more information on it?