• ABZB
  • Member Topic Starter
I chose to activate Magnarokket Dragon's Special Summon effect in the End Phase (I had multiple cards available to activate, I had manually selected it to activate).

After the menu with the targets in Deck came up, I accidentally right-clicked (I think I did it just as the menu appeared).

The menu closed, and a popup saying "an error occurred" popped up, then the Duel ended.

(I assume that since the menu closed when it should have not been possible, the function expecting a card as a return value was not happy).

Unfortunately, it did not generate a replay.