Tea out the Nose
From the list of known in-game issues for Vanguard:
"Many players are using the new rentable mounts and are dismounting when crossing zone lines and while running in to trees. Development is aware of this issue; in the meantime we recommend that you avoid running in to trees."
"Many players are using the new rentable mounts and are dismounting when crossing zone lines and while running in to trees. Development is aware of this issue; in the meantime we recommend that you avoid running in to trees."