Different views on Mac and Windows for Multiple Select

[ksa-facelift]

Bug description:

On windows we realized in our application that the closing Button (x) in the multiple seleciton is shifted to the top. On the apple system everything looks perfect. When I examined the code, I realized that the x is added as " x". It seems that windows and apple are interpreting it differently. At first I thought, that our styles are the reason for the shifted x, but when I visited your plunkr for the multiple selection I saw, that the problem already exist on the ui select component. Attached you can see a screenshot from windows and apple.
https://angular-ui.github.io/ui-select/ -> Multiple Selection -> Edit in Plunkr

UI-Select:
https://angular-ui.github.io/ui-select/ -> Multiple Selection