I noticed location was lost in Maps on this update, at first. For me, it was because I was updating indoors, and I just needed to go outside with Maps or Vespucci or some other high-precision-while-in-use app was open and wait for it to get a good location.
It’s the same as using a new satellite navigation device, or resuming with one that hasn’t been used for a while. The device keeps a transient cache of satellites broadcasting the radio wave signals it uses for its own purposes, and this sometimes needs a refresh. The signals are pretty weak too, so roofs and even thick vegetation and some types of treated glass can block them. However, the more sats it can receive from, the stronger the signal. If you’re interested in real-time information on the sats themselves, try GPSTest from f-droid.
Hope it’s a simple reason like that for you too!