I know you would think, I ran to fast and felt, but if it was a lag causing that, in my screen.. I was moving very slowly and stopped and clicked the down arrow.

It happened to me 3 times already.
I died 2 time from that falling from high ladder. And 1 time, I felt and before reaching the ground got teleported back on top of ladder alive.

I must admit, I try to avoid ladder now :D