I have used zoom for years and typically use classic whiteboard when I am tutoring. I can usually see my student in a small window as well as seeing the main whiteboard window.  Recently the layout of my screen changed (I assumed a software update) and I can no longer see my student in the window. I have searched the controls but can’t find any way to get the window. Any suggestions please? 

Since the last update to zoom_amd64.deb on May 18th, when I open a Whiteboard, I can see the selection of new or previously used Whiteboards as it should be. Also, when I enter the same session as a separate user on my iPad, I can see the whiteboard after opening.
Alas, on my PC, in the Workplace Window, the Whiteboard only appears for a few seconds, with the icons for a guided tour of the new functions. After that, the Window remains pitch black, only the blue and red Controls on top (You are collaborating on this whiteboard / Close whiteboard) visible and functional. The Whiteboard itself remains visible, no controls, no error codes, just black.

I am using Zoom in Ubuntu 22.04.4 LTS on a Lenovo V 14-IIL

I use Zoom only for educational purposes, and since the recent update, everything has been a disaster. My students see my whiteboard with a significant delay, making it very difficult for them to follow my explanations because they do not see what I write in real-time on my whiteboard, which appears when I share my screen. They can see graphs with Cartesian axes and other tools that my native whiteboard has. Additionally, I can pause the sharing, and they can perform the operations, then, when I resume the shared screen, they check if they have done it correctly. However, with the native whiteboard, this is not possible. I am suffering a lot with this new update when everything used to work well before. Furthermore, I have students with not very good connections, and since the update, everything has slowed down for them. Webex is a cheaper alternative that does what I need and is exactly what Zoom did just before its absurd update. I don't understand why something that was working well is now performing so poorly. The AI integration is useless to me, and I believe it should be an optional choice, not forced with new loaded and useless versions.

With 5.10.3, Whiteboards are turned on for all users. Is there a way to disable them at the account (web) level? I know they can be turned off in a meeting by unchecking Whiteboards in Security.

Turning it off in In Meeting (Basic) -> Whiteboard (Classic) doesn't do it.

The problem is that anyone can start a Whiteboard, and it hijacks the meeting until someone figures out how to turn it off (uncheck in Security or Stop Participants Sharing in View Options). Since the ad for the feature shows up in every client that updates, someone is sure to do an "OOh, I wonder what this is."