Endless loading after Lightbox is closed

I have an issue that keeps occuring in both preview and published modes. I have several lightboxes in the e-learning and when I close a lightbox to go back to the module, the video begins to load and it just keeps loading and loading. I have to close or refresh the page to get the module working again.

Is there a way I am able to resolve this issue? With this occuring after the video has been published, I don't want to give the users a bad experience.