Thanks for reaching out! I'm not able to reproduce the issue you've described, so my guess is that this might be localized. Can you please clear the browser cache? Here are the steps for this: https://knowledge.hubspot.com/articles/kcs_article/cos-general/how-to-clear-your-browser-cache. (Please note that if you are using Google Chrome you'll want to be sure to clear the cache & cookies from "all time" to ensure that the correct data is being removed. In the advanced tab, you can double-check that your passwords are not selected as an item to clear).
If you are still experiencing playback issues after clearing, please let me know.