I have been spending a few days exploring my new map with the halloween update, and I have decided to settle down, fence of a large area and get it lit up so monsters wont spawn in it and cant get in (Perhaps ill make a mini village inside or something). Anyway...I am fencing the area off with a 3 high fence. This involves making a 2 high wall of dirt, placing fences on it, removing the top layer of dirt, more fences, last layer, more fences. But I'm at a ridge in the fence, the highest part of the line, and when ever I place fences on the dirt, they are there, but they are invisible.
Pretty sure this has happened before. Give it time might be the best bet. Or, switch between skins. You might have to delete minecraft.exe (It shouldn't hurt your saves) and reload the launcher.
Any help?
Hope this helps!
Only way I've noticed to fix it is to place a block directly next to the invisible fence to make it reappear.
And use search, i know i already replied to one of these today..