Tvheadend

Hello,
I have an issue with descrambling video streams over htsp, probably Cam cannot be properly driven on this type of stream, on MPEG pass-through and Matroska formats video is descrambled perfectly, but Kodi isn't supporting pass-through and matroska streams, only htsp. I've digged more - when I tune in on scrambled channel via VLC in pass-through or matroska stream, channel is descrambled on my VLC pc and then I'm opening in the same time - the same channel on raspberry's kodi via htsp (2 streams will be broadcasted) - it's now descrambling video! but when I change channel to another on kodi - again it's scrambled and htsp stream cannot "set up" CI Cam properly, could any developer look at that? Maybe it's known problem? I'm using very fresh tvheadend version (not remember now exactly rev. but it's 4.1).