https://wccftech.com/vivo-nex-pop-up-camera-rises-itself/

Some users in China have complained that the Vivo NEX has a bug and a rather terrible one. Apparently, the pop-up selfie camera sometimes elevates on its own, and to provide sufficient evidence a Weibo user has uploaded a video that shows the phone’s retractable selfie camera popping up when the messaging app Telegram is being used. By no means did the user intend to take a selfie; all that was just opening a chat window in the application when the unexpected happened. The camera popped up automatically and then went back down on its own.

Other Vivo NEX users have reported experiencing something similar when using an internet. When the travel booking information page-in Ctrip is clicked, the retractable selfie camera elevates for nearly half a second before going back down. The camera doesn’t take any pictures when it elevates by itself. Vivo says that this problem is rooted in the way the way Android camera APIs function (via MySmartPrice).