I don’t know how but I haven’t included the 4.19 fixes for the V1 shader. I’ll get on releasing that ASAP, but in the meantime you can fix it by opening **/Game/Shaders/CelShader/MaterialFunctions **and editing varients of the EdgeDetectColour and EdgeDetectDepth material functions:
Once you’ve opened them, find the EdgeDetect node and click on it, then add the line UV = ScreenAlignedUV(UV); to the top of the shader.
Hit save and you’re done.