ZOOM multiple issues in linux

I just upgraded to zoom Version: 6.2.11 (5069) in Zorin OS (.deb package)

Share screen options have changed and there is no option for annotation, I need that option to take online classes. Is there any way to fix this issue and how long it might take to get these fixed from a new update ?

And also i sometimes experience sudden freezes while taking online classes, everything stops working and i need to force restart to use my laptop again. My laptop is fast enough but this is happening due to some issues with zoom or any other thing that I may not know. 

Any help would be appreciated !