Yes, I think I can replicate the problem. From the Core Rulebook > Table of Contents, clicking on the Far Trader hyperlink takes me to the Common Spacecraft title page instead.
However, once arrived at the Common Spacecraft page, a sidebar menu opens up on the left-hand side, in Traveller Nexus. Clicking on Far Trader from the sidebar menu take me to the proper Far Trader page.
So, it looks as though the sidebar menu is coded differently to the Table of Contents. The erroneous page jump is from the TOC page.
Maybe it is something @Eve , or someone else from the Demiplane Staff, can look into? (Thanks)
This is the perfect place to put things like this. That said I fixed the issue, looks like when we built that table of contents we had a space between FarTrader and URLs don’t like spaces. It should be fixed now!