When you use /onotice or send to target @ $+ $chan it doesn't send to yourself nor trigger the on-notice event. If you do them in a #channel it shows the outgoing notice in the active window, but since you're doing it in a @custom it shows instead in Status Window

Code:
on *:INPUT:@notices:{ if ($1 == /notice) aline @notices me -> $2 $+ : $3- }