In game there is two ARM. CM-102 and LD-10. So it doesnt looks like its some ARM. Could be? Maybe the game is just listing it as an ARH missile and that explain why its not showing on replay?
At first glance it does look like a bug yes. You can bug report it here: Gaijin.net // Issues (just search a bit first so that you don’t report something that is already reported and known about)
Well it seems that both ARMs the JF-17 has are E band only and the 346’s radar is I band, so that possibility is ruled out, seems like a more complicated bug to me then