Game crashes and deletes latest what you have done!

Building a new world, because my old world is not playable any more but it is already been reported. So, I will wait for that to be solved.

Anyways...

When I am building my buildings, all the sudden I see a black screen for a little while and iOS main screen. Game crashed, I can tell by what I see.

Meanwhile game looks working on the background and I touch the game and game restarts, I look at the map I was working on and I see like before the crash my map was 153MB and after the crash my Map is like 141MB WTF!!!

I enter the game and there!!! All most of the recent things that I have done, is gone! Gone for good.

Such a setback, Ive worked so hard to complete the building and now all is half way down-lost standing right front of my eyes. This is crazy!

This happened to me like 4 times already. Its not a one time thing, so I need to report!