Hover label elements are misplaced on small viewports

[eagor]

text itself seems to be aligned properly, but the background rects are overlapping.

Demo:
http://codepen.io/eagor/pen/RROKKK

[eagor]

did some more testing. Looks like it's not long text to be the issue:

http://codepen.io/eagor/pen/dXLNzX

[etpinard]

Looks like the issue is with small width / height viewports in general.

Thanks for posting!