Sound not working in all moves

Hi, I have been playing lichess with it’s latest version to the date under iphone 6S. I don’t get moves’ sound after all moves. Some moves do make a sound, but others don’t. And it doesn’t seem to be related with the pace of the game. I believe this may be a bug.

Does anyone same issu? Is there any workaround?

Thanks in advance,
Cedric.
P.S.: I searched for this problem and couldn’t find any recent post related to this.

Do you use the app or play in the browser?

For me sound in lichess has always had slight nuisances.

I'm a sound engineer and on desktop when I'm suing my pro sound card, lichess sound lags for 4-5 moves before getting up to date. This might well be the sh**y driver of the pro sound card, as lichess is not the only page with problems. No problem when pro sound card is off and internal sound card is used.

On mobile (android), the app works flawlessy but if I play from browser, as you, many moves don't get sound or get a very faint idea of the actual sound.

i have to same in browser as #1. not all moves have sound