Video Agent API endpoint is now using my logo as the thumbnail instead of the video image

Did something change in the behavior of the API endpoint? I have been adding a logo asset to the videos for a while and asking the video agent to include it in the branding, but now the thumbnail that is getting created is the logo itself. That is clearly not what I want coming back. I explicitly put in the prompt that it should not do that, but it continues to give me back the logo in the download of the thumbnail.