Scroll bars appear in the right side of each icon

Steps to reproduce:

1. As Admin click on More applications > Create your own! rom the left Applications panel
2. Click on Create Application
3. Add an Application name > Next Step
4. Add any field > Next Step
5. Under Icon click to choose from the Icon Picker

Excepted results: The icons appear and can be selected.

Actual results: The icons appear but each one has an unnecessary small scroll bar in the right side.

NOTE: Reproducing on 16.10.3 and 16.10.4.

Doesn't reproduce on 16.10.2