@decoamorim Terribly sorry, there was indeed a leftover unsuitable preprocessor if-condition not yet adapted. This has just been fixed on the 4.1 branch via this commit.

A new URP Spine shaders 4.1 UPM package is available for download here as usual:
https://esotericsoftware.com/spine-unity-download
Please do get an update accordingly. Please let us know if this update fixes your remaining issue. Thanks for reporting!

@decoamorim Hey sorry man the latest shaders only support Unity 5.6 unfortunately. I don't have time to backwards support old version of Unity - guess if you can't upgrade to the latest version of Unity then you'll have to keep using an old version of the shaders.

@decoamorim go to Settings... and look for this:
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