Zombie Villager in a zombie villages/ abandoned villages have super speed

So when I was going to a woodland mansion, I encountered a zombie village. I visited them for loots... But something isn't right I was gatherin loots and exit. Suddenly zombie villager are speedy that I can't hit them... I was dead and now I have to walk again from start....

 

Device: MyPhoneT2 DTV

              8 GB storage

              1gb RAM

 

Can't view a screenshot because zombie villagers are too speedy