When stunning or grabbing Big Band while he's dashing towards you, he will retain the unflinching buff indefinitely until he tags out or performs another action.
I noticed this happens every time when I'm playing Parasite Weave Filia and use Drillationship to stun an incoming Big Band. Also happens when using Cerebella's Merry Go-rilla to grab a dashing Big Band.
I lost a couple of times because of this bug, because if I don't eliminate him while he has infinite unflinching, he can just combo me back or use a blockbuster.
I noticed this happens every time when I'm playing Parasite Weave Filia and use Drillationship to stun an incoming Big Band. Also happens when using Cerebella's Merry Go-rilla to grab a dashing Big Band.
I lost a couple of times because of this bug, because if I don't eliminate him while he has infinite unflinching, he can just combo me back or use a blockbuster.