Going to fossdem, and having the jolla phone in flight mode on the way here (updated to latest version), when I tried to use GPS on the jolla - it didn't work. It never got a fix - even though I spend all day, often letting it "stir" for 5 minutes, and tried using osmand and other map applications (incl. builtin) - without network connectivity (since I do not have data roaming and had no wifi nearby) - and it would never get a location.
I then went to the hotel and (during a long day without GPS - where fellow windows phone and android phone users worked fine without data but with GPS) to find that when I had wifi at the hotel - my GPS worked fine.
Today it works fine as well - so it seems there's some sort "init" needed for GPS.. that it needs to "startup" with network connectivity to ever get a fix ?

Was really embarressing to be the only one whose GPS did not work :(