Steps to replicate the issue (include links if applicable):

• Go to https://pl.wikipedia.org/wiki/Wikipedysta:Msz2001/brudnopis/InputBox
• Take a look at the expected editintro appearance as shown on that page
• Press the "New section" button
• See how the editintro looks like

What happens?:
Styles specified by the TemplateStyles are not applied.

What should have happened instead?:
The cite box should look the same, no matter whether embedded on a page or in the editintro area. This is especially useful for templates like "message box" that may be purposefully placed in editintro areas.

Software version (skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):
Expected appearance:

Actual appearance (only sitewide styles applied):

The template used for demonstration is https://pl.wikipedia.org/wiki/Szablon:Cytat