Thank you for raising this.
I have forwarded it to our German language specialists.
We identified one audio playback issue on the newly released code.
It seems that 1 card out of 10-20 does not play audio on Windows Chrome and possibly also on Safari, we haven't managed to reproduce it ourselves on Safari, but have seen few reports from users.
It seems to work fine on Firefox and Edge.
We are working on fixing the issue.
We deployed yesterday one audio related fix to public which is supposed to fix multiple audio playback issues.
The issues mainly affected IOS 10 users.
Can you check today if you have had any improvements?
If not, then we will go back to drawing board to figure out the cause for your issue.