yeah - I tried with wifi at home and no difference...I said wasn't 'working at all' but trying earlier if you dropped a pin in the 'right' place then street view would start working then you could use as normal
have an ipad air2 with 15.4.1 and the 4g ipad (8th gen) with 14.7.1 software, both do the same thing, tried restarting, delete/reinstall google maps/switching location on/off on both but can't see any pattern on what's happening
annoying...use the 4g ipad as a sat nav for work for the past 10 months, apart from google maps going down 1-2 months ago (now have offline maps downloaded) it's been flawless
through safari as mentioned above seems to be the workaround for now...maybe even a better solution if you have a route planned in the app with stops/waypoints but want to look at some streetview images