Sometimes when my world tries to save it will get stuck and I will have to tap on the home button on my phone, delete the game from my taskbar and then reenter the My colony aplication (the actual game won't freeze since I can still tap on buildings and do other stuff, but the game won't save even if I wait a couple of minutes, and because of this I can't just save and exit or do anything that has to do with saving). And also, when I come back on the world that got stuck it will send me back to the previous save and all the progress that I had made between that save and the one that the game got stuck on will get erased.

(Android 6.0.1; galaxy A5; my colony version 0.54)