The students are going to be building a diagram in a multiple drag and drop to multiple targets interaction. It's a graded Pick 1 free form slide. The interaction is not registering that the question has been completed when the custom submit button is clicked. I've attached a file with rough sketches of the slide that works and the slide that does not.
This is the message I'm getting when I drop objects in and click the Submit button:
"Invalid Answer: You must complete the question before submitting."
Can you help me figure out why the one labeled Example works, but the other one does not.