The recipe works just fine, i made a few myself about an hour ago
Hmm... I'll have to try again. I've started a new map (going for the skyblock this time). I'll have another shot. I've got some nets in the water and trying to hang around there enough that I'll hopefully get some fish.
As a side note, which is annoying, I'm playing on Linux, and the first two times I started, I rage quit in about 2 minutes. The fact that half blocks don't respect the sneak moving is annoying, but on Linux for some reason, every now and again, the movement derps, you keep moving after taking your finger off the key, not something you want on a skyblock map. As a result, I'm building everything out of full blocks, yeah, it's more expensive to expand, but early on you have sufficient wood, and then later on, cobblestone etc coming out of your ears. So far out of the reward bags, I've got the coloured bricks, and the wood ones. So if nothing else, my platform will be nice and colourful.