samsung J1253 7.0Kg washer, water out of powder draw?

i have always cleaned and looked after my sammy, today i put on the washing machine, but water poured out from the powder draw, it was neatly closed, but this one puzzles me, but what on earth would make this happen, as i always asumed that a good mix of water and powder disapeared down the pipe, are there any close off valve or could it be blocked in some way?
any help appreciated