When you have added the filter to hide posts with no images, and a thread in the Thread Watcher has a lot of new posts, clicking on it, doesn't navigate you to the first unread post, but below that

[darkred]

To reproduce:

• add the filter /^$/ (filename) to hide posts with no images
• add a thread in the Thread Watcher. Click to open it.
• after a while, when there have been added a lot of posts(more than a screenful) click on it's entry in the Thread Watcher to open it:
  it will open, not being at the (highlighted) first unread post, but below that (more or less).
  (but, with that filter off, it works ok.)