### Steps to reproduce

1. Login as a user with permissions to manage work packages

2. Go to a work package that has some dates

3. Click on the date field

4. Clear the finish date by clicking on X


### What is the buggy behavior?

* Cursor stays on Finish date but focus is on Start date making it confusing for the user


### What is the expected behavior?

1. Cursor and focus should be on the same Begin of the insertionfield

1. In this case, Finish date


End of the insertion Begin of the deletion field 


End of the deletion ### Screenshots and other files

I have attached a video

### Environment information

**OpenProject version**

Core build

[22ba43924f20e695d2549bbe6d8dfe8f26060b67](https://github.com/opf/openproject/commits/22ba43924f20e695d2549bbe6d8dfe8f26060b67)

Product version

[79e94fc8ce0c56340ccde1cb1ab146313456604e](https://github.com/opf/saas-openproject/commits/79e94fc8ce0c56340ccde1cb1ab146313456604e)

Core version

OpenProject 15.4.0

**Browser**

* [x] Chrome
* [ ] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

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