Does this work in 2019.3? I get pink texture

[keybol]

Does this work in 2019.3?

[keybol]

Also, what are those 8 Ignore Shaders By Name you included in ShaderStripperVariantCollection

[keybol]

What does this warning mean?

Sigtrap.Editors.ShaderStripper.ShaderStripperEditor must be instantiated using the ScriptableObject.CreateInstance method instead of new ShaderStripperEditor.
UnityEditor.EditorWindow:.ctor()
Sigtrap.Editors.ShaderStripper.ShaderStripperEditor:.ctor() (at Assets/Editor/ShaderStripperEditor.cs:42)
UnityEditor.EditorApplication:Internal_CallGlobalEventHandler()

[SixWays]

It does work in 2019.3 - however ShaderStripperVariantCollection is unfortunately very hard to use correctly. Unity doesn't seem to actually include all necessary variants in the collection files it generates, so this stripper will strip far more than you actually intend. I recommend only using it for debug purposes, e.g. if you're testing a specific set of shaders and want to keep build time to an absolute minimum.

I'm not sure what you mean by the 8 ignore shaders by name. If "8" is a typo, and you're asking how Ignore Shaders By Name works, it just doesn't strip any shaders matching those patterns even if they're not in the collection(s).

That warning does pop up sometimes and I'm not sure why, but it doesn't seem to cause any problems for me.