Using PBR materials with Glow and Emissive is causing an incorrect alpha sorting behaviour. this behaviour is new as of 7.1.10 and did not exist before (see 7.1.9).
This effectively breaks all PBR items using 'Glow' and 'Alpha'
  • rez a cube, set it to 50% transparent, (or any existing alpha object)
  • rez another cube
  • apply a PBR material
  • set alpha mode to 'Blend'
  • set alpha to 0.00.
  • assign blank emissive
  • set emissive to white
  • set glow to any value higher than 0.