When user shares a full screen application then some portion of menu bar is been truncated and not be visible properly to the users present in the meeting
1. Launch a meeting on mac 10.7
2. Open any application on mac 10.7 (eg : calender , safari etc)
3. Click on share my screen
4. In the modal dialog of sharing select any application (safari or calender)
5. From top right corner of application click on button to make application full screen.
The top menu bar of application is not being shared properly and the bar seems to be truncated.
This is know bug (#3107491) and is being worked on by the engineering.