Random rectangles in Close

My friend has a cloze deletion that are both listed as C1, but the second one appears as a blue rectangle when you click the space bar, rather than showing the text that should be there. Any idea why? Am attaching an image of the issue.

  1. Check if this is caused by an add-on: When problems occur - Frequently Asked Questions
  2. Post the contents of your card templates here. Click on Cards button and copy the front and back templates and the styling and post them here. Please post the contents as code (See Forum Editor | Formatting Reference [Guide])

Thank you abdo. Am waiting for my friend to shoot me over the code on that card.