When creating a child issue inside an Epic, it is not possible to use the Date Picker to fill Due Date field

Issue Summary

When creating a child issue inside an Epic, it is not possible to use the Date Picker to fill Due Date field when it is required.

Steps to Reproduce

1. Make the Due Date field required and add it to your project screens;
2. Create an Epic;
3. From inside the Epic, try to create a Child Issue using the inline creation;
4. A pop-up will be displayed as the Due Date Field is required;
5. Try to use the calendar icon (date picker) to select a date.

Expected Results

The calendar will open and allow the user to select the desired date.

Actual Results

Nothing happens.

Notes

Video reproducing the behavior: Screen Recording 2019-08-29 at 04.49 PM.mov

Workaround

Create the issue with the Due Date field and add it to the Epic later or fill the Epic Link field during the issue creation. Additionally, it is possible to use the Create issue in Epic option available in the board.