Is it nnormal, when the target is in full tracking and switch off the transmitter - to have on display killing zones and point of impact?
Yes, that is from the analogue computer. (used first time in the KRUG)
Also, still when SNR is hit, the game terminated (that was reported as a bug by someone before...
That is, how it was designed.
If a KRUG SNR is hit, that is also terminal for its crew.
(You are sitting right below the antenna)