[Autumn]

When summoning a youkai via Infernal summon, they wind up at the end square instead of colliding with the first enemy met, this allows them to be inside of enemies or eachother.

To replicate, use infernal summon on a target at 3 or 2 range, and observe as your youkai won't stop until the end of the line regardless of who's in the way.

[Neus]

This should be corrected in 2.79.