Thread:Project:Support desk/Automatic TOC

On the Automatic table of contents, the numbers are all repeated twice like

1.1 1.1 The Advantages of a Logical Approach 1.2 1.2 Main High-Level Conclusions 1.3 1.3 Summary

I just copied the first three headings on the table of content from my page so you can see how it repeats and this goes on to the end of the page and as you can see the numbers are repeated twice, how can I edit this?