So, here are two major scenarios one in macOS and other ChromeOS/windows.
When I do tab recording in both the OS the recording works fines that mean it captures my mic with internal system audio - all good here!!
But, when I do Full Screen recording:
While doing full-screen recording I saw a major difference in this famous popup:
Why there is a difference between the share system audio checkbox in mac it's not there and in ChromeOS/windows it's there?
pop-up in macOS:
pop-up in ChromeOS/windows: