after some time villagers wont pick up items

when i start a survival world and get to the poin when i try to breed Villagers, they wont pick up any food. Te wierd thing is i can breed them  in creative mode but not in survival mode i dont know if this a bug ore something , but i had like three to four worlds in survival were i could not breed them. i had beds and bread and enought space , still it wont work. 

i hpe you guys could check this out because this is really bothering me and i dont know what to do .

thank you