Problem

After inserting a link to an anchor in a page, Confluence seems to be truncating part the resulting URL, making the link useless.
For example, a link to an anchor named "section two" would be rendered as

https://<account>.atlassian.net/wiki/display/<spaceKey>/<page>#<page>-sectiontw

(note the missing "o" letter at the end of the link).
The issue seems to be intermittent.

Steps to Reproduce

1. Create a new page
2. Create a numeric list with titles that will eventually be links. (such as: 1. link one, 2. link two, etc.)
3. Create 4 h3 headers with some text, below the numbered list ("section 1", "section 2", etc.)
4. Above each h3, insert anchors ("section one", "section two", "section three", etc.)
5. For each of the items in the enumerated list at the top, highlight the text and click the link icon.
6. For the link, use the corresponding anchor that was just created (i.e., "#section one" or "#section two").
7. Save the page.

Expected Result

Links would point to the anchors correctly

Actual Result

Some of the links are not rendered properly

Reproduced using the following environments:

• OS: Windows 7
  Chrome 26.0.x
  IE9
• MacBook Pro OSX 10.8.3
  Safari 6.0.4

Workaround (From Michael in the comments)

Click the "Save" button after entering the anchor destination, rather than pressing the Enter key.