Was it a bug or you didn't flip the closed sign to open again? If it is a bug i'll try to fix it when the jam ends, i'm glad you still enjoyed the game, thank you for giving Seam a shot and for the art-compliments haha! :)
Haha happy to help, i kind of knew this would have happened so i placed a reminder in the options menu last minute hahah, i'll still add the esc button next build probably!