This is still an issue and causing a lot of disruption. We see core location service failing which causes the likes of google maps to not be able to determine the users precise location. Turning WiFi off and on does not always seem to resolve the issue temporarily

For anyone who has been experiencing a kCLErrorLocationUnknown on Mac. It appears someone in the Chromium forums has suggested a workaround to fix it; this worked for me as well. Simply turn your Mac WiFi off and back on again

We are also seeing this on a mass scale, becoming more frequent. Created another thread since this one has not got much traction: https://developer.apple.com/forums/thread/783597