Basically in the sing patches you can see audio recording lines show up immediately after recording them (like a dictaphone). This is how it works in the demonstration by the tutor.
When I am recording however its just one big blue line and I can only see my recording after I am done recording, its very distracting and not what is shown in the demo. I think its a bug and it happens both on Chrome and Safari on Mac OS, I will check on my windows PC if it also happens there as well.