community center celebration bug

i finished the community bumble in co-op, went to the mines to have a dialog with willy, got spawned on the lake right after.

Continuation of a multiplayer game (split screen) in version 1.6. We just completed the Community Center. When the celebration scene was completed I was automatically returned to normal play; my wife, however was stuck in the final frame of the scene, and had to press the "-" key on her...