Sharkmaw Caverns
It apparently depends on where you drop — I haven’t had it happen to me in Sharkmaw. Try going down a different way.
However, it appears that something might have changed about falling generally, because I have seen similar symptoms after missing a jump on the way to some vistas. (Long drops sometimes don’t trigger any damage …until 1-2s after hitting the ground and starting to move away. Doesn’t appear to be skill latency or other types of “lag.”)
John Smith: “you should kill monsters, because killing monsters is awesome.”
You’re not the only one with the problem, I’ve had it there to, it might be linked to this if you want to take a look. Same thing is causing two bugs
https://forum-en.gw2archive.eu/forum/support/bugs/Serious-fall-damage-bug/first#post1989297