[Verizon Galaxy Note 4 Q&A, Help & Troubleshooting] yammyammyamm:
Same here. I want to add couple of more issues actually.

-when charger is plugged, that lightning icon disappears and re appears every 50-70secs. But this happens very quickly that your eyes may not catch it. When soft keyboard is on, keyboard disappears in the blink of an eye and reappears. It is impossible to use the keyboard sometimes. I suspect, power button address is called for a reason or a proccess is terminated and re-run again, couldnt identify which process. This gives me the smell of a software error. Some users tell that even they cannot unlock their phone because keyboard pattern is disappearing half way and have to redraw the pattern. If this sucks, disconnect the charger and draw the pattern and reconnect again. But ofcourse after this your keyboard starts malfunctioning.

-When phone left plugged to charger, it never reaches 100% charged so easily. Always starts to slow charging at 92% or 94%. When you watch red light, it seems to go steady but blinks very quickly every 20-30 secs actually. When the phone is turned off, it is again blinking very quick every 20-30secs that even you can not catch. This slows down charging. As the phone is off and no software is running, this gives me the idea that bootloader or in other words bios is malfunctioning.

-I have tried different chargers ranged 500mA to 2000mA, result is slightly changed. Phone's original charger is also a problem.

-Connected bluetooth keyboard, no issues encountered during typing. But when you move the cursor left or right by keeping left or right arrow, it stucks just for a portion of a second and keeps going. So, again there is a software malfunction is interfering this. So strange.....

-When i remove the battery and give about 6-10 secs then re install the battery and startup the phone, problem dissolves for a short time and again starts.

-I have replaced the battery (thinking this is a battery issue) installed a brand new one, result didnt changed.

-For example open google chrome and just wait.... You see (random time elapses) google chrome application restarts. Again do not touch anything, many times you see google chrome restarts. Actually i have tried boatbrowser also. Just run the app and go to a web page and wait..... app restarts. This causes when you are climbing down the page, it teleports to top of the page and reloads.

-I have long pressed power button. When power off and restart appeared, long pressed on power off, then safe mode appeared and selected it. When device started from safe mode nothing changed. Conclusion at this stage this is not caused by a third party app.

-I am a PC user for a very long time, i know when hardware malfunctions, different fatal things happen. Not this kinda things. This things gives me the strong idea of a software malfunction.

-Also, you cannot turn your screen off. When you press your power button it just turns off for a fraction of a second then turns on asking for my password (my unlock screen is password protected).

So, two conclusions; this is a software error (most probably), or a hardware error (less chance). If hardware is malfunctioning then service is required. But u know services are not solving problems 100%. They may simply say "no problems found with your device" :p :p :p

I am also waiting for a solution or an update. I have to tell that this has first started when my battery depleted completely when i was out. When i get back home plugged to AC charger, red light was on but not charging. Phone remained dead for several hours. Then i long pressed power button then it blinked 3 times then to sign of life. Everytime i long pressed the button same 3 blinks came. Removed the battery then placed it back, started charging. After about 40mins phone was awake :p. In the middle of the night i was up for a drink and my phone was on the wall charger. Screen was turning off then on then off then on non-stop repeating this. That time i was using a different charger. I thought wattage of the charger was not powerful enough. Unplugged the phone saw that it was 94%. This is the all story. But started happening after upgrading to lollipop.