Why does my RigidBody jump weirdly in the begining of the animation? As soon as the animation starts the top of the box weirdly jumps or wiggles, depending on wheter Mesh or Convex is selected. Here is the download of my project
You've chosen Shape &gt; Convex, it makes the lid collides with the box, so instead choose Mesh which will respect the mesh shape. Also choose the minimum Sensitivity &gt; Margin: