Unity UI Button's "clickable region" is misaligned?

Here is a gif I made that shows the issue.
Basically, I can only click the button from the bottom-most part of the button. Why is this?

 

Anyone?

 

I had this just recently...it was an issue with the Rect dimensions not matching what I expected. I had some width, height, scale, and such going on in a way that the Rect was a different shape than the Image.
Please share details on the whole Button, including special mods you've made. We need the details; that's where the devil is, after all.