does not show questions when I'm in another tab

Hello dears. I have a problem.

I have an interactive video from vimeo pro, it works very well, the problem is that if I'm in another tab when a question should appear, it stays stuck and does not show the question. I could even go forward without responding by updating the browser. Is this possible to solve?

have :

• single choice
• multiple choice
• true/false
• mark the words

thank you. regards