ashtagon
For various reasons, I wanted to have a header called "Adjacency". It seems that is a reserved word for header names in dokuwiki, and results in a blank header.
Alongside page names called "con", that's two I've discovered now. Are there many more I should know about?
Perhaps any word that needs to be reserved should include some kind of prefix (perhaps "dw-") in order to avoid such circumstances. That obviously can't work around the "con" issue (which is because of a Windows O.S. reserved word), but coudl help in the header names.
michitux
There aren't any "reserverd" words in DokuWiki, headers can have arbitrary names. I also can't reproduce the problems with your header names in my local wiki.
Is it possible that you have a plugin installed that causes these problems?