TOC Plugin destroys column layout when inserted inside a user macro panel

Summary

Table of Content plugin will destroy column layout when inserted inside a user macro panel

Environment

• Confluence 5.8.x

Steps to Reproduce

1. Create a user macro
2. Create a new page
3. Insert page layout
4. insert the user macro
5. insert the macro Table of Content inside the user macro
6. Save the page

Expected Results

1. Saved page displays exactly like in edit mode
   

Actual Results

The layout formatting is broken

Notes

• Does not happen in Confluence 5.7.x
• In Confluence 5.7.3 this combination works fine with the plugin toc 2.6.12

Workaround

Put the table of content outside the User Macro

attached to this Issue:

• code of the self written macro
• source of a page with two-column layout (you need the confluence plugin source-editor)
• a screenshot that shows that mozilla has errors in the source code