Unable to edit text link in IE8 after changing it

Problem Description

When user edit text link in Confluence page using Internet Explorer 8, they are unable edit it back again. The text link is read only after wards, there will be no text field that you are able to edit.

Steps to reproduce

1. Add page using Internet Explorer 8
2. Paste a link in Confluence editor
3. Click the link once, and click Edit
4. Edit the Text link instead of adress and save the changes of the link
5. Don't save the page, but instead Edit the link again
6. The Text link will be rendered as read only and you are unable to edit the text