Some WebDriver commands, such as resizing the browser window, require a Chrome extension to be loaded into the browser. ChromeDriver normally loads this "automation extension" every time it launches a new Chrome session.
However ChromeDriver can be instructed to connect to an existing Chrome session
instead of launching a new one. This is done using debuggerAddress in the
Capabilities object, also known as
ChromeOptions.
As the automation extension is only loaded at startup, there are some commands that ChromeDriver does not support when working with existing sessions through remote debugging.
If you see the error "operation not supported when using remote debugging", try
rewriting the test so that it launches a new Chrome session. This can be done by
removing debuggerAddress from the Capabilities object.