At this point https://world.waze.com/editor/?lon=174. ... TTTTTTTTFT when you drive from left part of High Street to the right part of High Street Waze (android) guides to turn right on a roundabout, and go through the roundabout. Even though there is a direct road there.
And here is the same place with my map report, with proposed route and actual path: http://img845.imageshack.us/img845/8836/routec.png
The allowed directions are all correct.