So when I'd logged off, I think I did on the tiniest edge of land next to deep water.
When I logged on, I was swimming. So I tried to climb a cliff. Oddly, I was still swimming, on top of the cliff, until I went a few more tiles inland. I ended up with 25% stamina as a result of this fiasco, and nearly drowned.
I think I read of someone else experiencing this issue in the Inn, but I could be wrong.