Thanks to Brent Stromberg, he discovered that on a 40% avalanche (after you break off the numbers row):

However the encoder twists do not register. 
They send KC on press, but no knob turns. 
Also the reset button does not work

And the problem is in the PCB, see image: https://imgur.com/a/KO09Qfu

P.S. Workaround - connect with a wire GND to the reset button (see pink trace drawing on the image above).