KDoc module level 2 headings don't seem to be working

Hello,

I’m trying to follow the Kotlin KDoc module formatting guidelines and I’m seeing everything squished together in my javadoc. Am I doing something wrong or is this a known bug?

# Package com.my_package

Classes

More text

## Level 2 heading ##

Testing...

And this is what shows up in the generated javadoc:

ClassesMore textTesting...

Thanks,
Daryl