I've encountered some similar bugs with macros that are generating links to others pages.

Since these issues are already documented on the plugin's page, I'll just refer to them :

• http://jira.adaptavist.com/browse/LINK-139
• http://jira.adaptavist.com/browse/SCAFF-106
• http://jira.adaptavist.com/browse/LINK-107

So it is said in LINK-139 that this is a limitation of Confluence. Is it really the case? Also, we have a license for Confluence and we are running 2.5.2 and no such problems occur. This is a blocker issue for migrating to newer versions. Even though this is a blocker here (we use lots of scaffolding forms generating links) it might not be the case generally, so I've put the priority to "Critical".