Concerning this patch note:
The bug hasn't been fixed on CLIENT side. Yes, the pet will teleport to you if you go to another "ground" instance, but if you're in AW while the crewship explodes, your pet still dies. I tested this when I'm host and they don't die (health stays gray and full, and will teleport back to you when you're in a "ground" instance), but when I'm a client, they die just like pre-patch 27.4.3.
Keep an eye on the pet health bar saying DEAD. https://gfycat.com/rem