Material-ui: [Popper] Weird Behavior While Hiding it.

[MomenYasser]

I'm using the new Popper component that released in 1.4.0. While closing the menu there's some weird behavior happening and I believe that is happening because of the transition from position absolute and static.

Expected Behavior

While closing it I expect smooth behavior with the transition effect.

Current Behavior

What actually happening is weird. It transforms from position absolute to static that make it push the button itself.

Steps to Reproduce

Just open the Popper then close it by clicking anywhere outside.

Environment

| Tech | Version |
|--------------|---------|
| Material-UI |1.4|
| React |1.6|

[oliviertassinari]

Please provide a full reproduction test case. This would help a lot 👷 .
A live example would be perfect. This codesandbox.io template _may_ be a good starting point. Thank you!

[MomenYasser]

Hello @oliviertassinari, Sorry for my late response.
I have created Sandbox example to reproduce this issue you can check it here:

[oliviertassinari]

@MomenYasser The issue was fixed by #12218. Thank you for the reproduction!