The AI has Pus Kami on the table , and spirits in the graveyard. No way to block my fliers.

I had a 4/5 sized flier it could target. It sat there for 3 turns wihtout activating the Pus Kami to kill it. Then it drew Tragic Slip , attacked with the kami and sacrificed it before blockers (on it's own attack) to trigger morbid, and THEN it killed the 4/5 flier using Tragic Slip.

The actual bug is that it seems that the kami ability didn't kill anything. There were 5 targets for it, the AI somehow chose none.

So there's a good chance that the ability doesn't work or doesn't register right, because the AI did use the first chance it got to kill the obvious target in a convoluted way which involved sacrificing the Kami. It could have just sacrificed the kami to do it with no fuss 3 turns before.