For those who like screenshots:
- Enable everywhere (for logged in users), remove icon from button
- Do not feature flag
- Visit https://en.m.wikipedia.beta.wmflabs.org/wiki/Barack_Obama and login.
- Scroll down the page and and look for the "Discussion" button. Make sure that the button contains only the word "Discussion" and no icons (as seen in this screenshot: )
- Repeat the above steps when in beta mode.