Have you double checked to see that you still have auto folding mirrors off? I just tested this scenario on my vehicle and I couldn't get the mirrors to auto-unfold no matter what I did. I locked and unlocked with button on remote, left and approached car and put the car in drive and reverse and they stayed folded the whole time. I have software 2017.34 2448cfc
I've already determined "random things" can happen with mirrors, driver profiles, etc... and found that settings hardly matter in some cases.
I still get a kick out of the one where moving the headlight controls slider from Auto to On to Parking ... all responding and doing what it says, until moving slider from Parking to OFF --- then BING!! headlights come ON in the OFF position. Am I going mad!? No. It's Tesla. Under certain circumstances, car in Park... after having driven a bit... and it was a full moon this was happening and repeatable. Posted about it here somewhere.