Where has waze said they only provide "on route only" popups? I had thought what they said was that you could select "on route only" or essentially "other" which would provide events within a radius of 5-10km. That is that the radius choices of 5, 25, 50, 100, 200 miles and All would all behave the same. But I thought waze was asserting that "on route only" would provide different popups from selecting any of these other options.
That being said I have only noticed popups for events on my route since installing 188.8.131.52. and I have not changed the Event Radius from its default setting of "All" since installing this Play store version. So I believe that you are correct - I have just missed waze's announcements on this issue.
Regional Coordinator: Mid-Atlantic, US
Verizon, Nexus 6, Android 6.0, Waze 184.108.40.206