How to prevent auto authentication on join_url after using start_url?

Hello,

We’re having the same issue. Actually, the issue comes from the Cookies left in the browser.

When using first the “start_url” with the zak token, seems like it’s writing something in the cookies.
Then, when closing Zoom (without being logged), and then use the simple “join_url” without any zak token, it goes-in automatically as the previous host!

It’s a huge security concern, because the previous start_url was not used with a login, but seems like it’s leaving traces of the host user in the browser.

Perhaps the solution would be not to write any cookies to the browser when using “start_url”.
Which other solution would you offer?

Thanks