Game: 12452955 Tokyo
Since Knights were the only attack, I bought a few and Lord Rat bought one. There was one defense (Moat) on the table...I bought one and LR bought zero.
I played the knights throughout the game. In the beginning, they worked as expected. But towards the end of the game, I would played them, but they seemed to have no effect. At least, the log showed no effect.
For example, Turn 21 of the game. At the least, the log should say, "LR discards 2 coppers," right??? But it showed only my play, and nothing re what LR did or did not have to do in response to my attack.
Separate observation: Turn 20. Lord Rat played Junk Dealer. AND TRASHED ONE OF HIS PROVINCES!!! This, is, obviously, the worst possible move one could make. Can't we program LR so that, "Provinces and Colonies are NEVER trashed. If LR has Junk Dealer (Chapel, etc) and all other cards in the hand are Prov/Colonies...do NOT play JD/Chapel!!!" Simple, yes. :-)