it happened in 185880761 room twice.
is this an allowed event?
basically, immediately after the log said the silver/gold was trashed, the wording of that log disappeared and the reality of those cards being trashed was also reversed.
the player it applied to was Bjunior
thanks.
Players can undo, without opponent approval, playing their Treasures (at least the basic ones that don't do anything fancy). That was introduced for Renaissance, for players who forgot to keep a Copper in their hand when they wanted to buy Ducat. I assume that was what your opponent did (undoing the Gold/Silver play).
The general idea was that playing those Treausures doesn't reveal anything. Your scenario with Corsair is one of the cases where playing a basic Treasure makes something else happen. It is debatable if that behaviour in your scenario is a bug or not.