[WebGL] not all lights rendered when using normal map

Unity Engine
1

i have 6 directional lights, 2 per axis, each axis has a color (x/y/z → r/g/b)

everything works nice in the preview, but in the browser the green lights seem to have no effect.

is this a bug?

2216073--147461--nogreen.jpg
2216073--147461--nogreen.jpg2449×1249 278 KB

2

it seems to work when i replace the textured (an normalmapped) material w/ a plain white material, how can a texture “eat” a color? o.0 and why does it work in the Scene and Game tabs…

3

it also works with an albedo texture but without normalmap… here’s my tex/map:

2216120--147463--153.JPG
2216120--147463--153.JPG1024×1024 211 KB
2216120--147465--153_norm.JPG
2216120--147465--153_norm.JPG1024×1024 344 KB

is something wrong with that?