I have troubles with the date picker, the Glide material shows the possibility for the user to pick a date from a calendar when tapping an arrow menu. The picker actually does not show up for me.
I also have this in my app when I use my android phone. iPhone users seem not to have it. I found a workaround and that is to click the left hand side of the date line and the calendar pops up. If you click the right hand side - where the calendar icon is - the line shows as ‘selected’ by changing colour but no calendar pops up. Unfortunately clicking in a specify spot is not very intuitive - so I had to make the date not mandatory on a form otherwise lack of ability to pick a date blocks people proceeding.