Last modified: 2010-05-15 15:54:51 UTC
On the SomePage page, clicking the above link jumps to the SomeSubSection anchor on the same page as expected.
However, if you give that link a custom name separated with a pipe
[[SomePage#SomeSubSection|Some Sub Section]]
It reloads the entire page and then jumps to that subsection, instead of the expected behavior of simply jumping to the anchor tag on the same page.
I am using the latest stable release of MediaWiki.
I certainly don't see this effect.
Confirm that the second link isn't using a redirected name or similar.