[RightDeve]

I can confirm that these four israeli tanks don't do any opfire whatsoever, even when egyptian tanks are adjacent to them (I used smoke right next to vhex, to let them that close).

But I put these four tanks under opfire AFV filter (only AFV), and they seem to opfire normally.

This is the save game, filtered and unfiltered:

Edit: well, Andy beat me to it.