**Observed on:**
Window 11Pro
Firefox 133.0.3 Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion Can be checked here: [https://qa.openproject-edge.com/projects/test-project-cecile/](https://qa.openproject-edge.com/projects/test-project-cecile/) Begin of the insertion

End of the insertion Begin of the deletion


End of the deletion <img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/262026/content"> Begin of the insertion

the date picker also wrongly parses a manually entered date

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/262041/content">End of the insertion