Files don't stay in the Window after d/ling Puntuado con 3 de 5 estrellas

Periodically Download Manager Tweak refuses to leave the downloaded files in the Download Window...where the file waits for me to either Launch the file or Delete it. I recall that someone once posted a trick to restore that functionality. Can anyone help?

Esta valoración es de una versión anterior del complemento (0.7.2).