Issue with IQ Datafields appearing only as 'IQ'

Since updating, my Windfield and TyreWiz IQ data fields in my Road profile show as 'IQ' when starting a ride. I can force them to appear by long-pressing and choosing to edit, then scrolling to IQ apps and selecting them. Then they appear correctly - for a while. Sometimes, in the middle of a ride, they revert to the IQ in display. I repeat the process, and then they are back. 

From what I see in the discussions, I think I may be the only person experiencing this.