I am using cycles to make an edge mask using a node group (screenshots below). I baked this mask on to a 2048*2048 black square image. I save the image. I apply the image texture to the object, resulting in the pictured stretched edges. I tried it with more complex shapes also, which messes it up even more. I imagine what is happening is that the 2d image cannot distinguish the inset face as a face, and treats the entire axis as an edge, how then do I fix it and make it work for complex shapes? Blend file: https://pasteall.org/blend/8e73d73390d54cada30bf7a6a55e6f52
Really really appreciate a solution. I have been working in cycles as a work around, but for design purposes it really slows me down.