Plants Vs. Zombies: Heroes Bug

I've heard you're back on forums, so here's something I want to share!

In PvZ: Heroes, there are some bugs that are game-breaking.

The main one is Quarterly Bonus. Many users on reddit complain about it, it is widely agreed it is harmful. Some ways to fix it are to make it only increase strength to 2, or to make it set the zombie's strength to 4, not increase it by 4. It can also be raised in price, for example, to cost 6 brains.