Vuforia Word Prefab not rendering on scene on Mac when Word Behavior is changed

Hey guys,

I have a problem with the Vuforia Word Prefab on Mac. It seems that when I change the Word Behavior Script's Type from Word Template to Predefined Word, there is nothing to be seen in the screen. Another observation is that when I first put the prefab in the scene, a white box shows up. However, there is no black text that is written with the AnyWord text on it. But, when I change the word behavior from Word Template to Predefined Word to Word Template again, the screen does not show anything. Anyone has the same problem as this?

On first add, it looks like this:

After changing it from Word Template to Predefined Word, it becomes this: