[Bug]: Markdown editor adds additional line to code blocks on each save

[Discostu36]

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When editing a Markdown document that contains a code block like this:

This is an example 

Every time that the file is edited and saved, the markdown editor adds an additional line to each code block in the document:

This is an example

Steps to reproduce

1. Create a md.-File with a code block in it
2. Edit the file in the integrated Markdown editor of the files app
3. Save the file and re-open it.

Expected behavior

The app should not add additional lines.

Installation method

No response

Operating system

No response

PHP engine version

No response

Web server

No response

Database engine version

No response

Is this bug present after an update or on a fresh install?

No response

Are you using the Nextcloud Server Encryption module?

No response

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

No response

List of activated Apps

* Calendar
* Notes
* Deck
* Tasks

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

Nextcloud 23.0.4.1
I don't have admin access to the server.

[XueSheng-GIT]

Is this related to #2344?

[XueSheng-GIT]

Could also be related to #2337.

[XueSheng-GIT]

Last one I found which could be related: #2287

[Discostu36]

You are right, this is a duplicate of #2344