Yep, I have the same experience. Sometimes it keeps telling me to do a U turn and turn around on their original route. I need to hit stop and reroute sometimes. Definitely not smart...

I use Waze mostly for the police presence. And there was a lot today (end of month...).

A nice feature would be if it sees more police presence than usual you just get a general warning "there's more police presence on your route than usual".