Sometimes MacOs reminds me of those times when Explorer could stop working: - If I have sublimetext maximized on other display, my mouse cursor gets stuck at d

Sometimes MacOs reminds me of those times when Explorer could stop working: - If I have sublimetext maximized on other display, my mouse cursor gets stuck at default pointer, no longer changing on context. - If I have same sublimetext maximized on other virtual screen, my mouse cursor stucks in text select. - Option to reorder icons in dock via drag and drop goes away randomly. - When I plug display to my MBPro 2016, menubar has white square where tray goes. - It gets stuck in boot -> kernel panic -> restart -> boot loop when I am starting it with display plugged in via their HDMI dongle. - On random, finder stops showing changes in filesystem. I've had this happen to me in Mavericks on old laptop, it keeps happening in Sierra on new one.