This does however mean that you need to be very mindful about crossing any water with a non-Astarion character in the lead, as Astarion will refuse to do so, and will run the long way around, regardless of what is there (enemies, traps).
He didn't last night for me. He followed me and ran straight into the running water and took damage. That's how I learned they put that feature in.
And I found it strange because the tadpole protects him from the sun, but not running water...maybe they don't like water?
