### Steps to reproduce Begin of the insertion(UI)

1. Login as a user with permissions to view backlogs and manage versions.

2. Enable backlogs for a given project (via _Project Settings_ > _Modules_)

3. Create at least one version (via _Project Settings **> Versions**)._ Do not set a date at this point.

4. Go to the Backlogs page. Click the ... (menu) in the header of a newly created Sprint/Version. Click "Edit sprint".

5. Three fields are displayed.


### Steps to reproduceEnd of the insertion (code)

1. Render a single date picker, setting the `placeholder` option.


```ruby
dates.single_date_picker(
name: :start_date,
label: attribute_name(:start_date),
placeholder: attribute_name(:start_date),
visually_hide_label: true,
leading_visual: { icon: :calendar },
datepicker_options: {}
)
```

### What is the buggy behavior?

* No placeholder renders Begin of the insertionfor the start and end dates.End of the insertion


<img class="image_resized op-uc-image op-uc-image_inline" style="width:577px;" src="/api/v3/attachments/918679/content">

### What is the expected behavior?

* A placeholder should be rendered


Begin of the insertion### Note for QA

The implementation differs for mobile and desktop - so ideally both would be tested.

End of the insertion ### Environment information

**OpenProject installation type**

* Hosted cloud edition


**OpenProject version**

_dev_

**Browser**

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

**Operating System**

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

**Language**

_en\_GB_