Moon roof trickle

Do all Moon Roofs trickle when in car washes? or raining? im told seals are fine and that it's normal long as it dont get into car? tha'ts why drains are there if theyre not blocked then thats ok..But Toyota say no should be sealed tight no trickle..I get mixed opinions about this.. They want to charge 1000k Toyota for new roof , but another person said no seals are not needing replaced, is that there General response Toyota? even i can see that the seals are ok...not worn. This is in upper passenger corner wonder if any other Rav4 Toyota trickle in?