video playlist images not displaying

Hi,

When I post a single video using WP’s built-in “add media” tool, it displays a screenshot from the video before it is played. However, when I post a video playlist, no image is displayed. What could be causing this problem? Has anyone else encountered this? Or maybe you are having no problems displaying images on video playlists and I could see what you are doing differently…

Let me know if you need more information to be able to help me.

Thanks in advance for your time and any advice!

Alex