I notice a strange problem with doxygen 1.8.2. Including a header label causes the header title to disappear from the output html.
With the following markdown file:
I was having trouble controlling the title of my Markdown pages in Doxygen; I ended up using the actual Doxygen @page command:
@page pageLabel This is my page's title
This allows me to reference the page using @ref pageLabel, and in my Pages section it shows up as "This is my page's title".
This was especially useful for me because I want my titles to have spaces, which isn't possible of Doxygen uses the file name as the title.