1. Crickets and grasshoppers hop in place, and stay in that place even if you go to next screen and back.
2. Sometimes, if you click the <Next> button too quickly, the robot that your talking to will only say: undefined. Then, you get stuck. As in unable to move. The emoticons and text messages still work, as far as I have experienced.
3. Sometimes there will be something that shows on the screen that's not really there. Like a house. o____O
4. There are areas/lots that are not labled vacant, yet are not occupied. Also, they do not allow those with permits and houses to occupy them.
5. Where there are more people there are more bugs/trash/flowers. (Generally)
6. The 'boundaries' overlap. (At least some of them)
7. Rina doesn't allow you to trade in flowers unless you have greater than or equal to the amount of gold needed for that particular bouquet. (Even if you have more than enough flowers)

I apologize if some of these are already known, but I didn't see a thread encompassing these issues all together.