I haven't had these issues, but I have had significant issues with its performance. 15+ seconds to initialize. At least 3+ seconds needed to swap between transit options. Moving to navigation mode feels sluggish. And this is on a Nexus 6, with no issues with other apps.

When I choose "walk" as the navigation mode it puts an Uber route on there, which when selected gives me an ad to try Uber for the first time. I don't have Uber installed on my device. I don't want to take a fucking Uber, I want to see how long it'll take me to walk somewhere!

I get the feeling that something happened in the Google org responsible for maps. It was always a snappy app that was useful to me. Now it's slow and appearing to be an avenue for ads on the device that I bought directly from Google. Unacceptable.