December had their comeback stage on July 13th's airing of 'Music Bank' for their new digital single, "Unfinished" and they experienced a broadcast accident.
When member DK walked onto the stage, the LED sign for 2BIC was brought out and 2BIC was the stage that was held just before December's. Luckily, the sign for 2BIC was removed after 2 to 3 seconds but it was long enough to get noticed by viewers.
Netizens left comments about this accident saying, "Huh? It's December but why does the sign say 2BIC?" and "Another broadcast accident..."
Source & Image: Newsen via Nate