iPad app looses program guide data - DirecTV

v 4.9.011, iPad 2
Get guide data (Live TV tab) after opening app. Switch to other tabs, e.g. Playlist, and then return to Live TV tab. Channel names display but program listings are blank. Does adjust to current time but guide stays blank. Both with/without Filters selected.
Also Home tab "Live TV Streaming" display line is blank.
Only closing iPad app and re-opening it gets the guide to display.

This question, "iPad app looses program guide data," is about DirecTV channels, programming, equipment, and sports.