I made a post to the Ultimate Timeline thread, which is under the WaniKani and API tags.
As seen here, the forum displayed the post being made.
However, on the main dashboard page, the updates did not appear there. It fell off the list because it only updated for the second-to-last post made on that thread, about 30 minutes before mine, but it was previously on this list.
After waiting a while with multiple refreshes, the status did not change. It appears most of the other threads updated correctly, but this one did not.