### Steps to reproduce

1. Login as a user with permissions to edit work Begin of the insertionpackagesEnd of the insertion Begin of the deletion packages End of the deletion

2. Select a work package and add a the following text to the description: `svc_gov_process_docfolder_envelope_hitlist`

3. Save the work package

4. Re-load the work package table

5. Click on _filter_ to and select _description_ - _contains_

6. Filter for `svc_gov_process_docfolder_envelope_hitlist`


### What is the buggy behavior?

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

* The work package with `svc_gov_process_docfolder_envelope_hitlist` in the description is not displayed in the filter results


### What is the expected behavior?

_Describe how the application should behave like. Example:_

1. When a user searched for text with the _description_ filter, underscores are taken into account as well.


### Important note

* If underscores are part of the work package's subject, searching with the text search (and also with global search bar) works.

* We fixed a related bug already: ###33574 However, the actual user story to be applied here is: As an work package user, I want to filter for work packages using underscores and other special characters, so that I can search for text/keywords/document numbers we are using in our internal processes.

* From Wielands comments in the above mentioned bug report, it seems like the ckEditor provides the markdown output for the search which is not a 1:1 duplicate of the actually input text in the WYSIWYG editor. That is why the following workaround is possible:
If you search for `svc\_gov\_process\_docfolder\_envelope\_hitlist` instead of `svc_gov_process_docfolder_envelope_hitlist`, the search results are correct.


### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/176235/content">

### Environment information

_Please check and fill out the following details to help us identify in what versions and distributions of OpenProject the error occurs_

**OpenProject installation type**

* Begin of the deletion [x]End of the deletion Hosted cloud edition Begin of the insertion

End of the insertion Begin of the deletion
End of the deletion * Begin of the deletion [x]End of the deletion Packaged installation Begin of the insertion

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End of the deletion * What distribution?

* Begin of the deletion [ ]End of the deletion Docker All-in-one container Begin of the insertion

End of the insertion Begin of the deletion
End of the deletion * Begin of the deletion [ ]End of the deletion Docker-compose installation Begin of the insertion

End of the insertion Begin of the deletion
End of the deletion * Begin of the deletion [ ]End of the deletion Other (please specify) Begin of the insertion


End of the insertion Begin of the deletion

End of the deletion **OpenProject version**

_14.4 (and older)_

**Browser**

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

**Language**

_DE tested_ Begin of the insertion

End of the insertion Begin of the deletion



End of the deletion _Support ticket_

_mentioned in ticket 18748 / This is mainly an issue in organizations that are relying heavily on file references. For example public offices/administration/federal offices._