Button Interactable Area Reduced?

Unity Pro 5.3.4f1

I have a button that I created awhile ago and it was working fine for a long time. Then something happened (I’m not sure what) and now the interactable area of the button has been reduced.

Previously, when the user would move the cursor anywhere over the button, the button would highlight and could be clicked anywhere. Now, when the user moves the cursor over the button… the button will only highlight and be clickable if the cursor is in the lower right corner area of the button.

Is there anything I can do to make the current button re-gain it’s full highlightability/clickability?

Thanks for any ideas!

OK, I worked around the issue by duplicating the problem button. The duplicate button properly highlights and is clickable in the full area of the button again.

Still… I would be curious if there a way to reset the original button to work properly.

Thanks!