While driving today (into new territory where tiles had not been previously loaded), I noticed several areas where the maps looked like a tile or two were missing. Another Wazer that I know reported the same thing. I use the Android version while he used the version for the iPad.
While working on some UR, I noticed a stretch of road that had 4 reports for missing roads. If I remember right, this is one of the same areas where I noticed the same problem.https://www.waze.com/editor/?lon=-97.14 ... TTTTTTTTFT
With 4 reports on the same stretch of road, is it possible that the tiles didn't get generated?