EuiSuperSelect focus lost after making a selection

[phyolim]

After clicking on an option in EuiSuperSelect dropdown, focus is moved to the first item in form. I think it should maintain focus on the current field like it does in other field types.

Workaround:
Create a ref attached to EuiSuperSelect.
onChange handler can be overwritten with a function that will trigger onChange and then focus on the ref attached to EuiSuperSelect.