We have problems with any makros embedded in headers and the rich text editor.

In WIKI-Markup it works without problems, but if you edit it in Rich text editor and you will switch back to WIKI-Markup it appears differently and you are not able to save the page correctly. Worst case is that you 'destroy' the appearance of the page or you get an error message (e.g.: h3.

{children}

)

The way out is to set WIKI - markup as default and edit the page again, then you can change the page and save it correctly.