UI Issue on Building ComboBox Component

Hi,

Below file is an attachment about the bug. Please follow the steps to reproduce it. I think you wiil solve this this as early as possible

Step1 : create a ComboBox in UI.
Step2 : Give template store to it
Step3 : Scroll down on focusing the TextField attached to it
Screenshot from 2017-08-24 11-43-57

Hi,

Can you further explain the steps for reproducing your issue.
Are you using the latest Piwik version?
Where are you creating a ComboBox?