Report Any base with corrosive cube (second wave) with traps behind it , all down a single hallway
As said above.
it’s not a feature of the game. If that were true, or someone who has a base like this tells you it’s true. Ask them , “ then why does my trap not work shooting through the corrosive cube while not in second wave?”.
pure exploitation of the game, report report report, leave that game, block the player, at least you know you’ll never play his or her base ever again.