4.0.0-beta.4
Can't reproduce in JSBin as ReactCSSTransitionGroup is not provided as a dist/standalone version and JSBin doesn't allow require calls

My mistake, I was using ReactCSSTransitionGroup as first child of <Switch>.
There should be an animation example using <Switch> in the documentation at some point to make it clearer how to do this.
Absolutely! @pshrmn I'm following your thread on this. I'm having the same issue as you, the new route that comes in is the same as the prev one... Let's hope they fix this soon! Thanks for sharing your experience.
Most helpful comment
There should be an animation example using
<Switch>in the documentation at some point to make it clearer how to do this.