The only thing I get when I click on the extension icon is "no downloads for this session".

Right clicking on links does not produce any code to be copied.

Appears broken in Firefox 66.05(64bit) in Ubuntu 19.04, but hard to tell since there are no directions or other guidance for how to use this add-on here nor on cli's linked website. Left or right clicking on a website, the url, or Cliget's icon in Firefox doesn't produce any code to be copied.

Unusable with dark theme!

Pre WebExtensions: 5/5. Post WebWentensionse: 0/5. Completely useless now. Serves absolutely no purpose whatsoever and does nothing at all. Downgrading to XUL based version, and switching to browser that still uses XUL. This was foreseeable and inevitable due to not merely to WebExtensions but Mozilla's complete and total failure to provide a competent API, using FUD to justify a neutered WebExtensions API and interface. To hell with Mozilla. Thanks to this developer for trying, but there's no point anymore.