Robert, you should report this to the Government, attention Area 51. Since iFly and ADSB are flawless, this must have been an alien ship or abduction.
Do you happen to have ADSB Logging enabled? If so, please send me that ADSB log (Send Bug Report => Select Log File => find the ADSB log).
If you'd like to enable ADSB Logger, do: "Menu => About => Connected Devices => Wireless Device => Check the ADSB Logger box. Then each time iFly starts up, answer "yes" to keep ADSB Logger enabled.