Button only triggers when cursor in upper left corner

I have set up 6 buttons in a row with links to another page. The first two “light up” for clicking no matter where I put the cursor in the button frame. The rest of them only “light up” when the cursor is in the upper left corner of the button frame. I have copied all the settings from one of the first two buttons into the third button but the problem still persists. How can I fix this for the sake of the user?

Cheers, Rick