### Steps to reproduce

1. Login to our qa-instances e.g. https://qa.openproject-edge.com/

2. Go to the work package

3. Upload a PNG image

4. Save the description

5. Reload the page


### What is the buggy behavior?

* The image Begin of the insertiondisappears,End of the insertion Begin of the deletion disappearsEnd of the deletion and the image link in the description is broken


### What is the expected behavior?

1. The image is persisted


### Notes:

The issue is not Begin of the insertionreproducibleEnd of the insertion Begin of the deletion reproducableEnd of the deletion on a local installation, it probably is a bug with direct uploads.
JPGs are not removed.
As a side effect of a false MIME type: Images are not exported to PDF

### **Logs**

<mention class="mention" data-id="4710" data-type="user" data-text="@Markus Kahl">@Markus Kahl</mention> found out in the logs:

```text
Failed to finish attachment upload for:
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] * user: 288 - Andrej Testdorf
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] * container: 20916 - Task #20916: Demo
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] * attachment file name: Screenshot_2025-05-19_at_16.33.18.png
[pod/openproject-worker-default-65dc594b89-btx8g/openproject]
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] Errors:
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] The file was rejected by an automatic filter. 'application/binary' is not allowed for upload.
```

and

```text
Performing Attachments::FinishDirectUploadJob (Job ID: 64f5d720-97ad-43f7-a463-3a93128d4dbf) from GoodJob(default) enqueued at 2026-02-23T12:27:52.871319350Z
[pod/openproject-worker-default-65dc594b89-btx8g/openproject] I, [2026-02-23T12:27:53.081015 #8] INFO -- : [ActiveJob] [Attachments::FinishDirectUploadJob] [64f5d720-97ad-43f7-a463-3a93128d4dbf] Failed to get mime type from /tmp/op_uploaded_files/1771849673-8-0037-0423/Screenshot_2025-05-19_at_16.33.18.png: No such file or directory - file No such file or directory - file
```

### Screenshots and other files

<img class="image_resized op-uc-image op-uc-image_inline" style="width:762px;" src="/api/v3/attachments/919237/content">

### Environment information

**OpenProject installation type**

* Hosted cloud edition


**OpenProject version**

unreleased

**Browser**

* [x] All

**Operating System**

* [x] All

**Language**

* [x] All