hay guys im wondering if anyone's had leak problems with their transmissions?

my car was sitting for a couple weeks i started it up waited for it to get up to temp then i put it in revers it moved about 5 6 meters then stopped moving i lost drive and revers and i looked under the car and there was a big pool of trans fluid under the car the earer where it was leaking from was the bell housing,gearbox is a ion four speed

just wanted to know if anyone else has run into the same problem
im pulling the gearbox today as cant find any other leaks any helpful info would be appreciated

cheers