[8.1.167][9.0.53] Specular/Reflection unexpected behavior with metallic

[SaphiBlue]

Hello,
The Issue occurs if a Mesh contains Metallic and non-Metallic parts.

In the current version of the Shader, the Specular/Reflection value is not ignored if metallic has a value of 1.

If there's is an Specular-Map and Reflection-Map the Metallic-Parts are looking dull and not metallic at all.

The full metallic parts should ignore the Specular/Reflection input value and overwrite it with 1, to match the behavior of other Shaders and Game-Engines.

To work around the issue, I have to export a Specular and a Metallic map. Then I have to combine the two into one "Specular/Reflection"-Map. I basilcy use the specular map as a background and use the white parts of the Metallic-Map.
See Image below

Result with workaroud maps (expected look, closed to the original in blender):

Result without the fix (Specular and Reflection the same input), the metallic part looks dull

Result with no reflection map (reflection set to 1) non-metallic parts are overreflecting

Original in blender:

[slord399]

Please ask in discord if you still have issue.

[SaphiBlue]

Please ask in discord if you still have issue.

This behavior still happens with the current Stable version (8.1.167), I Posted this also in the discord as I created it.

Edit: Tested this with 9.0.40, this is still present
Edit2: Tested this with 9.0.53, this is still present