### Steps to reproduce

1. Go to a WP list that contains WPs with children ([here](https://qa.openproject-edge.com/projects/test-project-cecile/work_packages?query_id=3687&query_props=%7B%22c%22%3A%5B%22id%22%2C%22project%22%2C%22relationChild%22%2C%22startDate%22%2C%22dueDate%22%2C%22duration%22%5D%2C%22hi%22%3Atrue%2C%22g%22%3A%22%22%2C%22is%22%3Atrue%2C%22tv%22%3Afalse%2C%22hl%22%3A%22inline%22%2C%22hla%22%3A%5B%22status%22%2C%22priority%22%5D%2C%22t%22%3A%22id%3Adesc%22%2C%22f%22%3A%5B%7B%22n%22%3A%22status%22%2C%22o%22%3A%22o%22%2C%22v%22%3A%5B%5D%7D%2C%7B%22n%22%3A%22project%22%2C%22o%22%3A%22%3D%22%2C%22v%22%3A%5B%22867%22%5D%7D%5D%2C%22ts%22%3A%22PT0S%22%2C%22pp%22%3A100%2C%22pa%22%3A1%7D) is one)

2. Add the Children column

3. Click on the arrow to expand the Children WP list


### What is the buggy behaviour?

* The list doesn't expand Begin of the insertion

* After a reload, the list expands as desired


End of the insertion Begin of the deletion


End of the deletion ### What is the expected behaviour?

1. List expands


### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/644812/content">

### Environment information

**OpenProject version**

Core build

[4b7cb05a9489d9c5ad3962fc4c2853c6848115aa](https://github.com/opf/openproject/commits/4b7cb05a9489d9c5ad3962fc4c2853c6848115aa)

Product version

[c778ff30a6cda2a75c540d3e3e20425f047f4bc6](https://github.com/opf/saas-openproject/commits/c778ff30a6cda2a75c540d3e3e20425f047f4bc6)

Core version

OpenProject 16.1.0

**Browser**

* [ ] Chrome
* [x] Firefox 138.0.1
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows 11Pro
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)