Also had this issue. I changed unlock to double-tap as well. The phone stopped unlocking in my purse, but started unlocking on phone calls while the phone was up near my face. I saw a fix on here, which I can't find again, but it recommended disabling everything to do with the Smart Lock, rebooting, clearing cache, and rebooting. One phone call in, that seems to work. However, it completely gets rid of Smart Lock, which means that I end up unlocking my phone 50 million times in my own house. I would really like some kind of solution that allows me to use all the features of my phone. I am paying for it.
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