### Steps to reproduce

Begin of the deletion _Please write down the steps to reproduce. Try to write down all necessary preconditions (what permissions do you have, are other users involved?). Example:_

End of the deletion 1. Login as and navigate into your Begin of the insertionnotificationEnd of the insertion Begin of the deletion notficationEnd of the deletion center

2. click on a notification of a work package

3. switch Begin of the insertionbetween work package tabsEnd of the insertion Begin of the deletion tabs End of the deletion


### What is the buggy behavior?

Begin of the deletion _Please describe the bug in as much detail as possible. Example:_

End of the deletion * A red error message appears stating:
"Filters Benutzer oder gruppe muss ausgefüllt werden, und ist keine ganzzahlige Zahl" Begin of the insertion

* <figure class="image op-uc-figure"><div class="op-uc-figure--content"><img class="op-uc-image" src="https://community.openproject.org/api/v3/attachments/919480/content"></div></figure>End of the insertion Begin of the deletion

<img class="image_resized op-uc-image op-uc-image_inline" style="width:425px;" src="/api/v3/attachments/919479/content">End of the deletion


### What is the expected behavior?

Begin of the deletion _Describe how the application should behave like. Example:_

End of the deletion 1. Tab witching should not cause errors


### Environment information

Begin of the insertionObservedEnd of the insertion Begin of the deletion _ObservedEnd of the deletion on Begin of the insertioncommunity.openproject.comEnd of the insertion Begin of the deletion community.openproject.com_End of the deletion

**OpenProject installation type**

* Hosted cloud edition

* Packaged installation


**OpenProject version**

_17.1.1_

**Browser**

* [x] Chrome