Actually this is a rare case, I tested about 20 cameras and this is the second time as I remember. I use external power supply. Right now my camera is off and I will double check it tonight. It's a not a big problem for me.
In my project I need to have a script that can recognize any initial state of the camera and bring it to operational mode from this state.
In this case I use "prsss half" "release half" that helps to bypass this time screen.
Another issue is when I wait half of second sleep(500) between clicks that control "left" "right" "up" "down" functions, sometimes it stuck. It's also very rare case, may be 1 of 1000 but it happens. I decided to use sleep(800). May be it will not get stuck anymore.