Elite Dangerous Odyssey, bugged Hydra in Threat 9 Signal Source 2

After Dropping into a Threat 9 Nonhuman signal source, instead of finding a Hydra and scouts, I come across 4 regenerating scouts. The Hydra drops in shortly after, and charges it's Shutdown field. It however does not shutdown my ship even though I am within a 10 killometer range and I did not use a SFN. The Thargoid appears to be scanning something and does not react to my fire. After killing the scouts I proceed to take out one of it's hearts, and then it atttacks me. I run away to prepare for the fight, but when I turn around it has left the instance.