Bulma: Navbar text color changes on resizing the window

[Cosbgn]

A live pen here: https://codepen.io/anon/pen/jYYLwO

And a .gif showing the problem

Why does it happen?

[ek1506]

To fix your problem, add the "has-text-white-bis" class to the navbar-item:
https://codepen.io/anon/pen/xpjWpQ

This problem occurred because you did not nest "navbar-start" and "navbar-end" under a "navbar-menu". The "navbar-menu" is hidden at smaller resolutions. Since you did not include it, the "navbar-start" remained visible with the default black color.
https://bulma.io/documentation/components/navbar/

[jgthms]

Thanks @ek1506.

[Cosbgn]

Thanks!