To be clear, this occurs while you are in multiball with two balls in play? The first ball drains and immediately kicks back into the shooter lane while the second ball is still in play on the pf?
When you say in three ball do mean you achieved multiball with your third game ball and when the first of the two the balls on the playfield drains the game ends not letting you finish the game with second ball that is still in play on the pf?