> What is the current behavior? When used with MUI's horizontal collapse, there is this weird twitching. Try adding a few cards in a disclosed sandbox. > What is the expected behavior? The animation is smooth and doesn't twitch. > Could you provide a [CodeSandbox](https://codesandbox.io/) demo reproducing the bug? https://codesandbox.io/p/sandbox/transition-group-with-horizontal-collapse-2frjrp