When Kurt begins hitting Nevenka with a whip, her back is turned to him, but it wasn't the shot before. This happens again in bedroom.
When the branch is hitting the window, it's clear that someone is making it do so by hand, because the motion is too unnatural and quick.
When the corpse is set on fire, the legs are moving for some reason but nobody reacts to it.
While Kurt is lying in the coffin, you can see that his eyes are moving.
Kurt leaves muddy footprints every time he walks between the house and the crypt yet no one following his footprints ever gets their shoes dirty.