If you place multiple signs with the same text on it, the third one will automatically pop off after placing. Trying to place it again will still make it pop off. Only if you make a sign with a different text and then destroy it, you can place new (identical) signs again.
This is particularly problematic when making signs in your vault or for making duckshop signs. In these cases you often have to make multiple identical signs.
This is particularly problematic when making signs in your vault or for making duckshop signs. In these cases you often have to make multiple identical signs.