So I’m here to say there are no missle warning sounds for any of the top tier AA including the pantsir s1. Also the new italian AA the missles pass through helicopters that are not even moving???
If you mean RWR warnings then no, many of the new systems use TWS mode on their radars (does not give a track warning) and the missiles are datalink guided until they get an IR lock (IR missiles do not trigger the radar warning).
If you mean MAWS warning then that might be an issue that needs to be reported.
You can bug report it here (just search a bit first so that you don’t report something that is already reported and known about): (Gaijin.net // Issues)
A guide on how to report bugs can be found here: ([Navigation] Technical Knowledge Base | War Thunder Wiki)
Thats because panstir uses K band track radar, some RWRs cant detect K band