### Steps to reproduce

1. Begin of the insertionBe on mobile

2. End of the insertion Login as an admin

Begin of the deletion 2. Go to a project/program/portfolio that doesn't have any sub-projects

End of the deletion 3. Go to Begin of the insertionany ProjectEnd of the insertion Overview


### What is the buggy behaviour?

* Begin of the insertionFirst visible information is the project attributes, fixed widgets show up afterwardsEnd of the insertion Begin of the deletion Subitem blankslate mentions 'children'

* Members blankslate says 'visible' membersEnd of the deletion


### What is the expected behaviour?

1. TBD Frontend group


###

### Screenshots and other files

See attached video

### Environment information

**OpenProject version**

Core build

[c1e12729b0fdc9d1cf6e1b53bb5c7f5dea5d2c1e](https://github.com/opf/openproject/commits/c1e12729b0fdc9d1cf6e1b53bb5c7f5dea5d2c1e)

Product version

[91d284e0b3c38027f496833bbb8b5351c954d17b](https://github.com/opf/saas-openproject/commits/91d284e0b3c38027f496833bbb8b5351c954d17b)

Core version

OpenProject 17.0.0

**Browser**

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

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [x] Mobile iOS 17.5.1/iPhone 12 Mini
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)