In this time, on this planet, we are not always in court and are now often running things remotely.
We (Users) have found that sometimes, Zoom doesn't blank the screen as it should when you are in LIVE.
There are several solutions to this and it all has to do with Zoom settings.
Go to Settings/Share Screen and Select Advanced.
From there you have some options, here is what we have found:
1. Deselect "Enable hardware acceleration for screen sharing" if you choose "Auto" Screen Capture Mode. (MOST RECOMMENDED)
2. Choosing "Legacy" or "Adaptive Copy without window filtering" also seems to work, without deselecting the hardware acceleration feature.