useDateRangePicker and MUI Textfield

[ndozhh]

Hi!

I want to create a DateRangePicker component using MUI's Textfield as a wrapper but I'm having an issue typing date's year, after I type the first digit the focus is lost, you can view a demo here https://codesandbox.io/s/date-range-picker-demo-n4v6ih?file=/src/CustomDateRangePicker.js

Any ideas of what I'm doing wrong? Thanks!