Mobs are spawning in deep dark again.

After the latest update, Mobs are again spawning all over the deep dark. They seem to be following the lighting rules as I have over half of the city lit up but as I went in to clear more of the shriekers in areas I havent lit yet, They started appearing all over. What really got me was how many were spawning on top of the "portal statue" in the center of the city.