No. I suggest to make some measurable tests before posting revelations. If you find something fishy post a short track.
There are many reasons Jester (or rather radar) won't show the target like wrong antenna coverage set, too small doppler shift, hiding in ground clutter, inappropriate search mode, too small RCS, etc. Also check DDD when you think it should show up on TID. May be there but not enough to build a track, etc.
Give us a case.