Page Affected: https://developers.google.com/web/TODO

What needs to be done?
In the section: View messages logged by the browser
Step 3: "Click the Log Levels dropdown and enable the Verbose option if it's disabled. "

Add the note:

"Note: If the Default Levels dropdown is disabled, you may need to close the Console Sidebar. Filter by Message Source below for more information about the Console Sidebar.

See evidence of confusion on this here.