F31 touring tailgate opening by itself overnight

[Ferdy123]

I opted for the power tailgate on a new f31 330d touring. 3 times I have left the house to find the tailgate open. Once overnight whilst raining, luckily nobody got in or swiped anything.
I'm thinking I'm accidentally pressing the boot release button in the house with the keys in my pocket, but I don't recall them being in my pocket all 3 times. Otherwise, it must be a wiring issue or something.
Has anybody else had this happen?

[Ferdy123]

I am taking the keys out of my pocket all the time now. The first time it did it, the car was 2 days old and the boot was up all night. There was condensation throughout in the morning, I had to leave the air con on for an hour to get rid of all the moisture. I bet they don't test for that pre launch.
I'll be keeping my eyes on it now to see if it was my numpty pocket pressing or something else.