Please also see the screenshots.

I am adding a new display to a 7" flex panel.

I can add the display and make the buttons (both sets) working correctly but the text on the "virtual button is only shown when the screen is active.

I have compared with the other buttons (which are working correctly) but I cannot spot what I am missing?

Please also see the screenshot.

I found it - the foreground color was set to "background grey" so the text was invisible.