Live events changes - any presenter can share live without a producer activity

Hi,

few weeks ago we tested a Live events and we would like to use in our company. But suddenly, what we tested yesterday, we found out that there are different behavior than before. Before:
1. We scheduled a live event.

2. We set who will be with a role presenter

3. Presenters joined an event and shared their desktop.

4. Producer joined the meeting also and he saw all presenters and their shared desktops and cameras.

5. Producer started managing who will be in live stream (which desktop and video).

Only a Producer was responsible what attendees can see...

Currently when any presenter start sharing desktop, go automatically live... It is not acceptable. Could you fix it please?