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### Steps to reproduce

1. Login and create a doc of type Experimental on Edge or edit an existing one

2. Select the text and click the underline button in the formatting toolbar

3. Save


### What is the buggy behavior?

1. The text doesn't show any visible underline.


###

### Begin of the deletion

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

1. Begin of the insertion~~TheEnd of the insertion Begin of the deletion TheEnd of the deletion selected text should appear with a visible Begin of the insertionunderline.~~

2. The toolbar should not offer underline at the first place. Having underline in the web is just confusing as it could be interpreted as a link.End of the insertion Begin of the deletion underline.End of the deletion


Begin of the deletion ###

End of the deletion ### Environment information

**OpenProject version**

**Core build**

[14952c6f0e6935d904f5f224322859f5dcb0b8cb](https://github.com/opf/openproject/commits/14952c6f0e6935d904f5f224322859f5dcb0b8cb)

**Product version**

[a58c32168495791b5944adbc577c4f0db8b1af03](https://github.com/opf/saas-openproject/commits/a58c32168495791b5944adbc577c4f0db8b1af03)

**Core version**

OpenProject 16.5.0

**Browser**

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

**Operating System**

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