It might just be the edge detect shader that is different, but I am not really sure. I am not necessarily asking for the same behavior, I just need to understand it.
Not sure what’s the problem but FYI the shader code seems to be the same in both VL and Beta
EDIT
Oh I think I got it, you needed to set the RenderTexture format to R8G8B8A8_UNorm which isn’t the default as it is in Beta. Also the resolution was different which I guess make the feedback to look different too.
you can also use any node that clamps the values between 0…1 to control the feedback. for example Levels… using 16bit float textures for feedback will lead to higher quality output.