I was trying to make a mob farm that uses one of Snocrash's famous donuts, but it appears that slabs let light through meaning that my mob farm only works during the night. This is stupid, there is no other, easy to collect, in large quantities block, other than slabs or stairs that do not emit light, that mobs cannot spawn on, I am going to have to turn all my slabs to full blocks now, and then try and light up the space, which is going to be a huge waste of my time when what I have already made should work but doesn't because of a bug that won't get fixed for another 1-3 months.
This may or may not be on purpose, however, as it seems that the Wi10/Pe devs want to make most farms not work, as most that would work on PC don't work on Pe even though there is absolutely no reason as to why it wouldn't work, and I am not referring to Quasi Connectivity bugs.