Dropdown selects the wrong option

[rreusser]

Select option b. It jumps to option c:

http://codepen.io/rsreusser/pen/YpNGaY?editors=0010

cc @jackparmer @etpinard

[n-riesco]

I'm already looking at adding a scrollbar to the dropdown menu. I could have a look at this issue too.

[rreusser]

Investigating this. @n-riesco's assessment is that my matching logic is interfering and needs to be better, which seems correct. Adding failing test and fixing now.

[etpinard]

Closed in #1176