Rim Lighting and Stylized Specular ignores Add Pass Lighting upon shader locking when using Toon for Add Pass Shading

[humwhoareyouexactly]

Currently using version 8.1.166, when I'm locking the shader every instance of Add Pass Lighting gets "ignored" when using Toon as the Lighting Type. Light still reflects on the surface of the mesh but rimlights (using the Poiyomi style) and speculars no longer shows up and I'm unsure if this also affect other options too.

[humwhoareyouexactly]

Looked more into it and found the problem, if both gradient (Start and End) have the exact same value, the add pass shading breaks on shader lock.