WebView: In drop-down menus can't see text of current selection

This has occurred about 90% of the time while testing on Solaris. Occasionally this doesn't happen.

1. Open a menu, and move the cursor through the menu items.

Result: The text of the selected item can't be seen since the text is white and the selection highlight color is white.

Expected: The text should not be obscured. Otherwise, the user may not choose the correct item.