Random warping
Sounds like you might be having some sort of weird latency issue, i.e. your computer thinks you are in spot (x,y,z), but the game server disagrees and thinks you are in (a,b,c). The game still accepts your keyboard commands so when you think you are jumping over a short log, the server thinks you are gliding someplace else.
Since I haven’t seen any similar reports (in-game, forums, or reddit), I recommend working directly with customer service on this:
https://help.guildwars2.com/anonymous_requests/new
Good luck & please let us know what you find out.
Happens to me in the Desert BLs, but it’s rare. I don’t spend much time in Orr.
https://forum-en.gw2archive.eu/forum/support/bugs/Video-Death-by-walking/first#post5961524
But yes, you’re not the only person this happens to. Happens to some of my guildmates as well.
A heretic’s voice in your head
A stargazer, releaser