27:00(Game time 25:00)
You appeared on the map when you go in trees and he was plant the wards.
About your ulti appears on hero status by hero status someone can know warded or not.
if you watch to replay before report, check by yourself at 11:47 see its status debuff on their HUD, This will give a chance to notice and escape.
to avoid with blink or eul or lothar or manta style
Denied.