This was not on experimental btw

I had this issue but I don't believe lag was the issue.

I have included screenshots - as I am not sure exactly where I was.

On approaching the large apartments i thought I would hop over the low balcony (where you go down the steep hill just before reaching it). However, when I hopped over, my char ended up under the floor, trapped, and unable to respawn.

I havent tried recreating it yet, though I suspect it would be easily recreatable, as I didn't notice anything untoward (lag etc).