It didn't appear that the ship had detected their sensor sweep, so the Arisen shouldn't know that the humans had found them and were on a following course toward the Anomaly in Koleska Space.
As they passed by various Koleska inhabited systems on their way back to their station, they saw even more Arisen vessels staging for attacks, sitting in the other layer of space and waiting for some sort of signal.
That was just cheating. No wonder they were always ready to block the human vessels. They already knew where they were, and they had time to stage ships to deal with them.
As they approached the other human vessels, Max watched the Cube disappear into the distance, not headed for their system. There also weren't any other Arisen vessels waiting here, and the space in the other layer was particularly turbulent. It was almost like someone had turned on the jets in a hot tub, and the currents were swirling madly.