Why did I die?

[DeathsSilkyMist]

I did some basic testing. The "fallen to the ground" message does not appear when FD fails because you leave auto attack on while casting FD, for example.

This proves there are cases where FD doesn't work and you also do not receive the "fallen to the ground" message. This is why using /con is more reliable when trying to determine if your FD succeeded or not.

As I said, I've only gotten the message 69 times in 4 years worth of logs on my SK, but I know I've failed more FDs. It's possible this is a quirk with the spell version of FD specifically.