2915c2924,2926
<           sub{$self->clicked_on_assignment($self->{ASS_KEYS}->[$ass_lb->curselection()])}
---
>           # sub{$self->clicked_on_assignment($self->{ASS_KEYS}->[$ass_lb->curselection()])}
>           # ... used to work, but no longer does
>           sub{$self->clicked_on_assignment($self->{ASS_KEYS}->[$name_to_key{$ass_lb->get($ass_lb->curselection())}])}