I’ve noticed for a while that when you watch a live OGS game that is still in progress, and scroll back to the beginning to replay it, while you are at the beginning of the game (Move 0) the sound effect will say “Pass” every time one of the players makes a move.
Normally there is a “click” sound every time the players make a new move, whether you are caught up to the latest move or replaying the middle; I assume the reason OGS says “Pass” when you are looking at Move 0 is something like, every new move increment triggers a sound effect, and whether the sound effect should be “click” or “Pass” branches on whether a new stone was played on the move number you’re looking at on-screen. But obviously it should be whether a new move was played at the end of the main branch…
This isn’t a life-altering bug, but it may be the fix is simple and the devs never noticed it.