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.
Found a bug in PC-BSD? If so, please take the time to read through this section first to ensure that your bug gets reported to the correct group and is resolved in a timely fashion.
The first thing to determine is the type of bug you are encountering. Is it a bug that is preventing you from properly installing and running PC-BSD (a system bug), or is it an issue with an installed software package such as FireFox (an application bug)?