There is a glitch that allow to enter overgrowth. I saw it for the first time from my own eyes, the mesmer not knowing i was on the third floor of the keep watching him trick jumping/portaling.
If you bury this bug too instead of fixing it, i post it on youtube, i post it on gw2 wiki, i post it on any social media deemed necessary, i dynamite your car, your cat with it and i send a letter to the president
that one keep, man.
anyways, I can confirm OP’s glitch (tried it myself). it’s a medium-difficulty jump but fairly easy to do after SAB tribulation made us all expert jumpers.
It just happened again as i type this post. We are stuck with the exploitable keep for another whole week. If it’s too hard for you to fix, hire someone who can. And even if you cant, It takes 5 minutes to add an obstacle that prevent it to happen again while waiting for a proper update.
More over while you are meditating on how ridiculous your customers are to complain about exploits that nullify all the mechanics your designers did put in place, allow me to remind you that village idiots who implement a wvw achievement that take 23 years to complete (you didnt see it before a player did warn you about it) are not the best persons to criticize us for asking you to maintain your kittening game.
Anyway, i ask to BL to look at the screenshot and to answer that question: was it really worth it, BL, was it really worth it?
