Mac Auto check/action when walking by something

Beanqueen9455

Greenhorn
I'm finding that my check/action is happening automatically when I walk by something or my mouse hovers over it. I'm on Steam, unmodded. My check/action key is Z, and it's like my key is jammed and going off constantly but it just started doing it out of nowhere and there's nothing physically wrong with my Z key.

For example, walking by chicken eggs, they automatically get picked up. No big deal but later I was shopping at the blacksmith's and I hovered my mouse over the copper ore and it just automatically purchased numerous ore until my mouse moved off of the ore button. Is anyone else experiencing this?
 
Top