Hi, I use my SP4 daily and always do a full shut down at the end of the working day, never hibernate/sleep. Since the anniversary update, I'm finding the trackpad and touchscreen are unresponsive around half the time I boot the device. A restart via the keyboard fixes this every time and on reboot they both work fine for the rest of the day. Unplugging the keyboard cover and reconnecting doesn't fix the trackpad issue. Anybody else experienced this or know of a fix, please?