Sorry for the inconvenience.  Known Navigation header breakage.
There may be other unforeseen breakage primarily in the handbook portion of the wiki.
The Table Of Contents section of each "PC-BSD® Users Handbook" page may be the best workaround.

Pages that link to "Category:Pages where template include size is exceeded"

Jump to: navigation, search
What links here    
Filters Hide transclusions | Hide links | Show redirects

No pages link to Category:Pages where template include size is exceeded.

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox