Always consume mouse wheel for a scroll box does not appear to work when there are not enough items to scroll

Always consume mouse wheel for a scroll box does not appear to work when there are not enough items to cause the scroll box to scroll. However, the tool tip says that the mouse input should be consumed even in this exact event.

1. Download the attached project
2. Open the project
3. Play in editor
4. Hover hover the buttons
5. Use the scroll wheel
6. Notice that print string prints hello when using the scroll wheel (the print string is setup to print when the scroll wheel is used)

Expected: The print string would not fire if the mouse wheel input was being consumed
Result: The mouse wheel input is not consumed when the scroll box is not smaller than the items it contains (meaning there is nothing to scroll)

ScrollBox doesn't always consume mouse wheel