Not sure if this is a bug on other maps.. but while on HOG this afternoon playing as the IDF faction/Bijar Canyon AAS my squad members found a Milan in the distance (900m exactly). Whenever we would shoot a TOW at it to take it out the missile would proceed as normal but then maybe 200m before impacting it would go crazy and act as if it was deflected then impact somewhere else. I thought it was maybe my squad members mouse but we tested it again later with a different guy manning it and got the same result. The Milan was able to hit us no problem and their missile did not do anything crazy like ours. I am also pretty certain we were able to engage a T72 from about that distance with no issues, only when shooting at the Milan itself.
If you want to try and recreate the scenario the positions were here:
https://image.ibb.co/bGJH4H/TOW_Bijar.png
If you want to try and recreate the scenario the positions were here:
https://image.ibb.co/bGJH4H/TOW_Bijar.png