ZOOM webinars starting automatically during practice session

[ASBO]

We've been using Zoom for multiple years.  Over the last month or so, we've noticed that attendees are coming into the meeting well before the start and during the practice sessions.   Is there some sort of setting for the webinars that is new?  We don't want them entering before the start time. In the past, we could start the practice session and then click a red button that said something along the lines of, "Start Webinar". Upon clicking the button, attendees could join, but not before this.  What changed? 

[UF1709]

Has this been resolved? What was the reason? We are experiencing the same now. Thanks.

[Rosa12]

I've experienced the same, anyone knows why it's happening?

[storyhub]

When you start a webinar you should see something like above stating that "you are in a practice session". If you click start webinar then attendees will be admitted. If not then go in to the web portal and make sure that "enable practice session" is checked in your webinar details setting for each webinar.