F-14 IRIAF – RWR not detecting incoming missiles. Bug or feature?

I’ve noticed that the RWR on the F-14 IRIAF doesn’t seem to provide any warning when enemy aircraft launch radar-guided missiles, including AIM-120s, R-27ERs, and similar missiles.

Is this intentional behaviour, or is it a bug with the aircraft’s RWR implementation?

Shouldn’t the RWR at least detect the missile’s radar illumination or provide some kind of warning?

Can anyone confirm whether this is historically accurate or whether the RWR is currently bugged in War Thunder?

Saw posts, where were shown that some planes (Su-39, F/A-18, others) can silent launch (without lock) SARH missiles, so it must be bug