[Select] The Select's Menu is not positioned properly when using the 'open' prop

• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

When using the open prop, the Select’s Menu should be positioned in the same place as if it were not a controlled component and was opened via a click.

Current Behavior

The Select’s Menu is positioned in the top-left corner, or elsewhere depending on how the rest of the page is constructed. Looking at the code, it seems that the anchorEl for the Menu is passed only from handleClick and handleKeyDown (anchorEl: event.currentTarget). When the Select is opened using the open prop, these functions are not called, therefor anchorEl is null.

Steps to Reproduce (for bugs)

CodeSandbox example : https://codesandbox.io/s/r7nvmz31nq

Context

I have a button that reveals a Select component and opens it for the user to pick an item.

Your Environment

Tech	Version
Material-UI	1.0.0-beta.32
React	16.2.0
browser	Chrome 63
etc

[oliviertassinari]

@caub is right. It’s something people can already handle on their side. I have been looking into documenting the approach. It turns out, the overhead for moving the logic in the library is minimal. I have added it.

[caub]

remove open if you don’t want a controlled select