Show transition is not being correctly displayed

[sharq1]

There's been an issue for this that has been closed ( #70 ), but it's not resolved and I'm forced to use ugly hack posted there, that doesn't work well.
Original issue text below:

So i have a component that returns this jsx:
<Transition
transitionAppear
unmountOnExit
in={this.props.visible}
timeout={this.props.timeout}
className={classNames(this.props.className, this.props.transitionName) }
enteringClassName="entering"
enteredClassName="entered"
exitingClassName="exiting"

my dom

I'd expect that i could then simply change the props.visible to make my dom show/hide using the transition of my choice. The transition is correctly displayed when hiding the component (setting props.visible to false) but when showing the component it does not show a transition.
It looks to me that it renders the entering class to fast after the render of the component and react makes both updates on the DOM at the same time, and that in turn will make the transition not work.

I've played a little bit with the source code and found out that if i change the Transition.prototype.componentDidUpdate method to delay the performEnter just a bit (5 milliseconds worked for me) then it all works fine. I've tested it both in firefox and chrome.
Is this a real issue or am i doing something wrong?

[rasentry]

Taken from https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Transitions/Using_CSS_transitions

Care should also be taken when using a transition immediately after adding the element to the DOM using .appendChild() or removing its display: none; property. This is seen as if the initial state had never occurred and the element was always in its final state. The easy way to overcome this limitation is to apply a window.setTimeout() of a handful of milliseconds before changing the CSS property you intend to transition to.

[taion]

We've removed transitions from this library.