I've recently returned to the game after a long period of my account being inactive, and have returned to find that I have two hatcheries (one level 1, one level 2) and two breeding mountains.
Both breeding mountains are functional (so I can breed 4x monsters at once), but the hatcheries are a bit weird - sometimes i can use both (hatch three eggs), sometimes it crashes the game just to touch them, and sometimes I put one egg in one of them and it'll say they're both full.
Has anyone else experienced this? I kinda like it but it's also a bit annoying. They also take up a lot of room. In this screenshot (https://imgur.com/N4OnKZQ) you can see what I mean, there are two of each. In this screenshot breeding has been completed and I can't move the egg out of the mountain without the game crashing, despite my hatchery being level 2 and there being an empty level 1 hatchery also.