Hello Corentin,
Thanks for your message.
It is in fact the proper behavior. The baking is basically building textures in order for the Low Poly to look the closest possible to the High Poly. Therefore, the normal map is supposed to edit the current normal of the mesh to make it look like the normal from the High Poly mesh.
From your screenshot we can see that the normal is taking a weird angle on specific parts.

To compensate these artifacts, the Normal Map "pushes" the normal in a di
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