Hi joffreyj,
The selected values actually appear in the jqxComboBoxes, but the font is colored in white, so that’s why you don’t see them. There seems to be some style, probably a media-query that is setting the color of the font to white when the screen is shrinked and something isn’t applied properly in FireFox, so it seems. The same happens with the placeHolder. Check the CSS styles that are applied, that’s the root of the problem.
Best Regards,
Christopher
jQWidgets Team
http://www.jqwidgets.com