I have completed up to puzzle 11. But now a strange thing is happening:
Everytime I switch off the game - either by power off or return to the desktop - it appears to be looping back to a previous position when I return to it.

Time is advancing, food is increasing, people are aging - but always they are back in a previous geographical position. Namely most of the people are carrying water from well to field, some are emerging from the sea. A few (different everytime) are scattered around doing minor chores.

Has anybody else seen this happen? Does it mean that I won't get to solve puzzle 12?

Gary