### Steps to reproduce

1. Be on an iOS device, on Safari

2. Go to Begin of the insertionaEnd of the insertion Begin of the deletion anyEnd of the deletion work package Begin of the insertionthat doesn't have any predecessors or childrenEnd of the insertion

3. Open the date picker

4. Tap on 'Automatic'


### What is the buggy behaviour?

* Nothing happens


### What is the expected behaviour?

1. 'No predecessor' message/screen is shown


### Screenshots and other files

Video in the Files tab

### Environment information

**OpenProject version**

Core build

[cdedf9351faa8dfa2d7ffa40b487d18c6f7a2979](https://github.com/opf/openproject/commits/cdedf9351faa8dfa2d7ffa40b487d18c6f7a2979)

Product version

[22feb25c7196201d723ee523582ce02bef57bcb8](https://github.com/opf/saas-openproject/commits/22feb25c7196201d723ee523582ce02bef57bcb8)

Core version

OpenProject 15.4.0

**Browser**

* [ ] Chrome
* [ ] Firefox
* [ ] Safari
* [x] Begin of the insertionMobileEnd of the insertion Begin of the deletion  MobileEnd of the deletion Safari
* [ ] Other (please specify)

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [x] Mobile iOS 18.3.1/ iPhone 14
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)