Droplab dropdown items' background not filling the space they should

When typing and selecting items via keypress, the styling for the dropdown's list items isn't correct. The blue hover state doesn't fill the space for each individual item.

Worth noting, it does fill the space when you hover with a mouse.

ss__2017-07-24_at_9.39.56_AM Pasted_image_at_2017_07_24_11_28_AM

cc: @jschatz1

Edited by Bryce Paul Jackson