Make a new bug/new update

Minecraft is a great game, I love it. But when I tried to go in my most favorite world the "building terrain" gets frozen and it logs me out of the game, please fix this problem and stop all the lag!
List of suggestions: ??
•stained glass
•readable books
•chairs that we can sit on
•kitchen mods?!

Please do this!!! I would really appreciate it!!!!
Thank you!!!

Cool da boy about Minecraft: Pocket Edition, v1.1.5