For quite some time, videos at the top of most/all CNN website articles won't play when the Trend Micro Check extension for Safari is enabled.  Clicking the ">" Play button results in a circling arrow that never stops.  Disabling the extension allows the videos to play.  My guess is Trend Micro Check is blocking the videos because they start with an ad.

A couple of days ago, I was unable to see a video on a Patreon artist's page – there was just a blank space where the preview image should appear (like the blank spaces when Trend Micro Check detects an ad).  When I disabled the extension and refreshed the page, the preview image appeared and the video played with no problem.  In this case, there was no ad before the video.

Today, the video blocking showed up on HuffPost videos – the preview image is shown, and a second later "ERROR LOADING" appears over the image instead of the ">" Play button.  Like CNN, HuffPost videos start with an ad.

Feature request:  Add an option to Trend Micro Check for Safari to keep its hands off all embedded videos.