Thread:Project:Support desk/Problem with the "align center" code in the tables (wrong rendered output?)

Hi All!

I noticed that  code works differently on the MediaWiki.org page and the en.wikipedia.org page. I type the same following test code on the both wikis:
 * http://en.wikipedia.org/wiki/User:Danny373/sandbox
 * http://www.mediawiki.org/wiki/User:Danny373/sandbox

Source (test) code:

test

The English Wikipedia (en.wikipedia.org) produce the expected and good output code: test

But the MediaWiki.org page produce the wrong and different output: test

Why the MediaWiki.org page produce following (wrong) code:  instead (expected) of this:

Thanks in advance for a solution and explain to me this strange problem.

Best regards, ---