Board Thread:Game Discussion/@comment-34676248-20180618115610/@comment-26829117-20180618120226

Are you using Android or iOS? I believe there is a problem with persisting current state in Android occasionally and force quitting. The way to "fix" it is to always exit the application with the back button (and confirm "yes" to actually wanting to quit). Of course there is the belt and braces approach too where you cloud save before exiting.