Elder Shrooms spawning in a giant mushrrom

I was wandering around trying to find the elder shrooms for the quest and some how all of them are spawning in a giant mushroom and it takes a realy long time for them to spawn out of the mushroom.

I have seen this bug in the Mushroom Forest, but with shrooms inside of a tree! I also saw this with crabbies inside a rock, during week 16!