PlayMaker Killable Bullet Issue with Trigger Spawner

Sounds like any re-used pool item isn't getting initialized properly. I experienced this many times when I first started using pooling. Normally in a script (non-Playmaker), that's because coders put code into Awake and Start events, which only get called the first time the game object is used (first spawn), and not on any re-spawn. That code would need to move into OnSpawned method which gets called on every spawn. Now I can't see where your initialization or movement code are (pick a direction to travel in code too). Are you using Playmaker for that or is that some other script? If it is in Playmaker, you will need to make sure nothing is hooked into "awake" or "start", which I don't even know is a thing in Playmaker or not.

If you don't have "pick a rotation" code, then I need to see more of the Triggered Spawner settings. You should use Spawn Rotation Mode of "Use Spawner Rotation" I would think so it will be facing the same direction...