Now I see where the problem is, but I am not sure what to do:
Here is the issue: the material used by that helm, as many other things in your mod,
has flag "uniform light" set.
Not your fault, BTW: that flag was misleadingly named something like "Unkonwn (for alpha blend?)" before.
According to the info I've got, that flag means that the light should be uniform in the object.
Hence the result you show.
It is true that no material in native have that flag and a bumpmap shader.
That a somewhat contradictory combination: the flag means that normals shouldn't count,
yet the bumpmap carefully redefines normals. I'm not sure what the game does in this case.
Maybe the flag should be ignored, maybe the normal map should (as now).
A screenshot from the game would help.
Even more so if first you replace the current RGB texture with a uniform-yellow texture
so that you can see better what the game does.
In any case, you probably want to remove that flag.
A best, it doesn't do anything; at worst, it compromises your lighting.
(as you know you can disable/enable a flag from many materials at once).
(In native, I can give you that for sure, only foliage meshes and very little else have that flag set.
Foliage meshes do look better without light computed on them, see screenshot in last update log.)
Here is the issue: the material used by that helm, as many other things in your mod,
has flag "uniform light" set.
Not your fault, BTW: that flag was misleadingly named something like "Unkonwn (for alpha blend?)" before.
According to the info I've got, that flag means that the light should be uniform in the object.
Hence the result you show.
It is true that no material in native have that flag and a bumpmap shader.
That a somewhat contradictory combination: the flag means that normals shouldn't count,
yet the bumpmap carefully redefines normals. I'm not sure what the game does in this case.
Maybe the flag should be ignored, maybe the normal map should (as now).
A screenshot from the game would help.
Even more so if first you replace the current RGB texture with a uniform-yellow texture
so that you can see better what the game does.
In any case, you probably want to remove that flag.
A best, it doesn't do anything; at worst, it compromises your lighting.
(as you know you can disable/enable a flag from many materials at once).
(In native, I can give you that for sure, only foliage meshes and very little else have that flag set.
Foliage meshes do look better without light computed on them, see screenshot in last update log.)