Thats what I am thinking, too. I will try to ask my dealer to see if they can replace the control unit which unlock the door.
I even asked Mazda North America. They told me to come back to them when it happens more often...
I have the exact same issue as the poster. I pressed my remote key twice to unlock all the doors. Then I tried to open the liftgate and it wont open. There was no sound from the acurator and it looked like its still in locked position. After I drove it for a while even started the engine for...
I have the exact same issue on my 2016 cx5 sport. Every time I drove it to the dealer, it wokred okay. The dealer replaced the liftgate lock anyway. But its still happening.