Haypi insta-starve TM
Haypi support simply refuses to admit the problem. The insta-starve feature is often coupled to a doubling of troops, which is probably the cause for the starve.
Today, myself and some other players in Argonauts saw the crop level in all cities go down and up again when calling in hunts. Some others simply starved. Instead of writting to support I decided to record the event. Maybe now support will stop refusing the existence of the glitch.
Here is the link. Watch it full screen and keep your eyes on the crop level and not on my troops

http://youtu.be/NeShYaCWvAM