Medium menu publication bug

I've had an odd experience on Medium, but I'm not sure if it's a bug or a feature.

When my browser window is narrow (small width), the "add to publication" link is unavailable in the menu. Only when I resize it to a wider width then it's shown, images are shown below.

If this is a bug, let me know how to notify their development team.

Narrow:

Wide:

Comments

[Jason Leung 🧗‍♂️👨‍💻]

Good observation! I see that they use a media query to purposefully hide it.

[Ilya Nevolin]

good find!