Second Boss in 24man "Void Ark" as a caster bugged.

[Arokhaerr]

On the Void ark fight the second boss duo Irminsul and Sawtooth lets RSR bug out when on a magical Job because of the buffs they get:

Irminsul gets the buff to become immune to magical damage.
Sawtooth gets the buff to become immune to ranged damage.

As a caster this prevents any actions to either boss, no matter if the settings are /rotation auto (Big or Small) or /rotation manual.
RSR falsely thinks that "immune to ranged attacks" also means immunity to magical ranged attacks. But this isn't the case. The boss can still be damaged through casting manually. RSR simply stops doing any actions as if there are no attackable hostile enemies around.

A fix would be to let RSR know that the Sawtooth buff won't affect magical damage at all and is meant only for physical ranged like MCH, BRD and DNC.