Not for me it isn't. Half way through trying to sort out a junction which had an unnececsary step in it which generated some weird turn directions (2 T junctions instead of a 4 way cross roads) and now I can't change turn restrictions from the segments or allow all for the node.
Before then I had a couple of error saving notices and had to undo a couple of my edits to get it to save then do them on another save. I was well under the "red zone" of 10 edits to be saved as well so no idea what's going on =(
Reported it using the form stickied on the editing board on the off chance it might help the bods at waze.
I've had all kind of errors in the last two days and saving was really slowly sometimes. A few times after hitting the save button it points me to roundabouts that doesn't form a circle in Lebanon, London, Indonesia, Malaysia or anywhere in the world.