When you seek, does the issue fix itself for the entire duration of the video, and then the problem happens again when the playlist advances to a new video? Or once the issue occurs, seeking only fixes the issue for a short duration of the video? Also, are you playing videos locally, with SMB, with XBVR, or streaming from the web?
Edit: Alright, I think I found the issue. There was a race condition where the script tried to play before the video was fully opened. It'll be fixed in the next update. Thanks for reporting the issue.