I died....from nothing. WTF?

https://preview.redd.it/7ay9d7aar7ae1.png?width=2560&format=png&auto=webp&s=3ea6aff74491a9cae1fec0b87a0fecce27bf2f20

Im sitting here talking to my buddy showing him some things on the map and explaining wow things. Anddddd I just instantaneously died. Combat log just shows I died. Someone told me if you're in feign death it will kill you,. but I wasn't in it. My death never appeared in the global or guild chat even.