Black Crow Map Boss Untargetable/Invulnerable

Was doing the fight in the second area, burst him down and then he went enraged and became invincible. couldn't target him anymore, so i am simply stuck in the fight. Tried to exit to character selection screen, but that didn't reset the boss. Closed the game, but also didn't work. Character was in limbo. Alive but only way out was to die

RIP EXP

+1, still happens in 0.3 if boss damaged too fast and has to transit to next phase during his special attack (red energy over his body). He becomes invincible and keeps spaming this special attack over and over again following player around arena and never transition to next phase.