Well after raging for about half an hour at my iPad because it deleted 3 hours work on my custom map, I discovered how to save the world. Since the 0.6.0 worlds no longer save immediately after exiting. To fix this problem:
-Play MCPE as you would normally
-When you quit to the main menu, exit the application immediately, do not enter your world again as it will not save your changes!
-After exiting, open Multitasker or TaskKiller, and close Minecraft
-When you renter your world, all changes made previously have been saved.
Unfortunely, this must be done every time you quit from your world.
yeah! lets do a 3 month update and don't test nothing!
this reminds me of the exploding bees of sengir and tekkit...
its the only major bug, there are sooooooooo many others like armor can disappear, falling blocks [8/10] times disappear, corner stairs randomly change texture, there is basically no point of baby animals, if a sign is destroyed while you are typing = Crash and Chest opened in multiplayer not ny the host = Crash
Glad to help I cant believe I found this by comeplete fluke I was like "Well the block I first placed are still there....maybe they save over time?" then i thought that would be too un-practical and deceided to try see if the worlds are saved when the app is closed and it worked xD