Not a correct displaying for Robots.txt

[Sharkozp]

Preconditions

1. Magento 2.2.1

Steps to reproduce

1. Add new Robots to Content -> Configuration (Design) -> Edit (Global) -> Search Engine Robots
2. Add this lines:

User-agent: *
Disallow: /index.php/
Disallow: /*?
Disallow: /checkout/
Disallow: /app/
Disallow: /lib/
Disallow: /*.php$
Disallow: /pkginfo/
Disallow: /report/
Disallow: /var/
Disallow: /catalog/
Disallow: /customer/
Disallow: /sendfriend/
Disallow: /review/
Disallow: /*SID=

3. Or reset to default
4. Check http://{magento_url}/robots.txt

Expected result

1. It must show the same that added to textfield

User-agent: *
Disallow: /index.php/
Disallow: /*?
Disallow: /checkout/
Disallow: /app/
Disallow: /lib/
Disallow: /*.php$
Disallow: /pkginfo/
Disallow: /report/
Disallow: /var/
Disallow: /catalog/
Disallow: /customer/
Disallow: /sendfriend/
Disallow: /review/
Disallow: /*SID=

Actual result

1. It is showing all in one line:
   

[magento-engcom-team]

@Sharkozp, thank you for your report.
We've acknowledged the issue and added to our backlog.

[hostep]

Noticed this too today, I'm pretty sure this is because the content-type is set to text/html instead of the expected text/plain

[hostep]

Just noticed this is already fixed on the 2.2-develop branch by this PR: #12310

[johnny-longneck]

Can confirm this issue on live 2.2.2 site. It only appears when the store view code is added to the url.
For me it is:

www.domain.com/robots.txt <- Correct format, wrong sitemap link
www.domain.com/de/robots.txt <- Wrong format, correct sitemap link

[okorshenko]

Hi @Sharkozp the issue has been fixed in 2.2-develop and 2.1-develop branches
Will be available with 2.2.4 release