Yes it was guaranteed by the bulkheads, and the guarantee has failed. The ship should not have sunk with this amount of damage.

The vessel grounded and continued to take on water, through the propeller shaft and stuffing boxes.[9]

The whole point of stuffing boxes was to contain water in damage like this.

The link you posted is in no way absolves the shipbuilder. Merely states that

The vessel's Spanish designer Navantia received a notification of a critical safety issue in relation to the frigate's watertight compartments

…and the investigation is ongoing.