Hi, @Ravi_E 
You wrote:
Yes, I meant sign in with some e-mail account (home, work or school) inside the initial Zoom Workplace screen, as in the Screenshot that @Norm24 has included in his post but where he (understandbly) “redacted” his e-mail address.
Could you include a screenshot of what you see in your Zoom Workplace program, please (redacting / hiding any private information that you may not want to disclose, as your e-mail address, for instance)?
I use “Ubuntu MATE 24.04 LTS” - I think that’s also the case of @Norm24 - which is still based on “X11” / “Xorg”. I think that “regular” Ubuntu 24.04 LTS (“Noble Numbat”) uses “Wayland” instead, by default, am I right? If so, could that be the reason of the difference? Supposedly in the initial login screen of “Ubuntu 24.04 LTS”, you should be able to choose to run your Ubuntu user session in “Ubuntu on Xorg” mode. Maybe you can try that and see if that helps? Indeed, I now see that @Blue_bird suggested just that in the 3rd step (“3. Try logging out and selecting “Ubuntu on Xorg” from the cogwheel icon at the login screen to see if functionality returns.”) of his following reply in the first topic that you created (“Zoom version 7 woes - side bar remains blank”)
By the way - and speaking of “Wayland” and “Zoom”:
1 - The web page " Sharing your screen or desktop on Zoom" - https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0060596 - does mention the following:
" (…)
Requirements for sharing your screen in a Zoom meeting or webinar
(…) Linux sessions utilizing Wayland can only share an entire desktop or whiteboard. To share just a specific application, you need to launch your Linux session with Xorg instead. (…)"
2 - I’ve also found the following discussion topic in the “Zoom Community” - https://community.zoom.com - “Feature Request: Native Wayland support and optimization for Linux | Community”:
I hope this helps