Tooltips not populating in narrow page layout

[NYPup2Train]

It seems like, around a month or two ago, a change was made to how the site handles tooltips in the interface. And since that change, AFAICT, the same logic that controls whether the League page loads the full interface or the "mobile" one, also controls whether or not tooltips are enabled in the interface?

Please undo that change. I use a mouse-and-pointer desktop interface with Google Chrome in windowed (non-fullscreen) mode, and suddenly if I make the window too narrow all of the tooltips disappear from the interface. They always worked before, and there's no reason they shouldn't be displayed even if my browser width is below N pixels. There are better ways to detect mobile users and/or touch-based interfaces, and no reason to punish the rest of us with a broken interface.