I’ve noticed on several aircraft now but RWR’s seem to be completely inactive in sim battles for AT LEAST the following aircraft:
F5 (All variants US and China)
A7 (All variants)
F104-C/S TAF/G China (I can’t check the others)
My method of discovery then testing was first to get shot down in sim with a radar missile by a plane I thought I could detect (eg: 27ER from M29 when I was in F14) then to notice I wasn’t getting any pings from ground radar around the runway when I respawned.
Returned to hangar and checked the receiving bands for the RWR on x-ray before I went into a sim test drive to check if I received a ping from the 2S6 there being an E band radar I could detect which I didn’t, when switching to RB for the test drive pings were received leading to the conclusion this was a sim only bug.
Repeat for all aircraft
Note: This list is not exhaustive as I can’t test drive and check every plane, I will edit and add more bugged planes should I find them.