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My 2015 AWD Touring with tech and bose/moonroof started having the issue with the liftgate not latching. It would close to a point where pulling it won't open it, but it clearly does not latch to the strike plate. Because it wouldn't latch, the interior trunk light would stay lit, the dashboard would indicate the gate was open, auto-lock when walking away wouldn't work, and the OEM remote-start wouldn't work.
I dropped off the car at the dealer before heading to work. They call me back later saying ice/snow was preventing the liftgate from closing completely. Made sense, and made me feel dumb, but I wasn't convinced. When I go pick-up the car (and ironically overhear another customer dropping off her mazda3 with a similar latching issue), I find that my liftgate still does not latch. I demonstrate it to them and they say to wait 10 minutes as they have another look. They "made an adjustment to the strike plate" and it seems to have fixed the issue. They are ordering another strike-plate in case my issue comes up again.