Yes exactly at clock tower, alde_dun04 (the map where you need key of underground) it was very frustrating landing on a portal after casting intimidate on the first bathory I saw, and then landing on a portal again 5 minutes after coming back
Suggestion to implement the fix to teleports (Fly Wing, Teleport skill, Intimidate, etc.) that prevents you from landing down on a map portal -- particularly useful for maps where you need an item to get into, e.g. c_tower4 and alde_dun04 It's very annoying to fly wing and teleport around the map and land on a map portal, then you'd need to spend another key to re-enter. I recall playing on a server that had this fix to teleport, but I can't remember what server.