### Steps to reproduce

1. Login and search of a wp that has a child Begin of the insertionwith datesEnd of the insertion (automatic scheduling)

2. Observe the section where the date should appear -> the date is not even visible (1st issue)

3. Click on Edit

4. Observe the date again Begin of the deletion (it's empty - 2nd issue)

5. Tap on itEnd of the deletion


### What is the buggy behavior?

* Begin of the insertionDate is emptyEnd of the insertion Begin of the deletion Message that the date cannot be edited and it's read-only

* in addition, please see the 1st and 2nd issue from the descriptionEnd of the deletion


### What is the expected behavior?

1. Date should show Begin of the deletion and should be editableEnd of the deletion


### Environment information

**OpenProject version**

_1.4.0-alpha (302)_

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [x] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)