Don't know for sure if this is an IFLY issue or just a slip up from FAA.
Last weekend there was an airshow at Chino Airport (KCNO) here in SoCal.
We were going to shoot a GPS approach when the tower said there was a TFR in effect for the airshow. We responded that there was no TFR presented on the chart or and NOTAM notice on our nav system.
We saw no TFR indication or posted NOTAM on IFLY for the entire weekend.
Couldn't find a NOTAM for that show posted at any source so it may not be specific to IFLY.
John M