Main menu is not intuitive

[janzarsky]

On certain viewport widths, it is not clear that the menu contains more items. There should be "something" that indicates that the menu is scrollable.

[tomtomklima]

There are - notice the darker bar lower from the menu strip. Or it should be more visiblle?

[janzarsky]

I don't see a scrollbar (even when scrolling). Android with Chrome, version 74.0.3729.157.