PopupView text not changing color when selecting a Grid row

I’m using Vaadin 8.1.0.rc1 and here’s my scenario:

  • Grid with multi-select row enabled
  • Column generated with grid.addComponentColumn.
  • The component added to that column is a PopupView.
  • When the row is not selected, the display is fine; when a row is selected, the PopupView text is hard to read. Notice the difference in the attached images.

How can I make the text of the PopupView change to a different color when the row is selected?
Or is this a bug that should be fixed in the framework?