SK1

Occasionally use resurrection potions and resurrection skills, after the resurrection of the teammates can not control, do not display the battle menu, the time bar is not moved, will be killed by the enemy until the end of the battle. It is normal to occasionally use resurrection potions and resurrection skills.

gamingislove

Could depened on different things - e.g. the Death Settings of your combatants (for all in the general combatant settings and individually per combatant in their Battle Settings > Override Settings).
E.g. Leave on Death would cause them to leave their group and effectively the battle as well.