"New posts" button misses the target
Being more of a browser than an in-depth reader, I use the little downward-pointing arrow to take me to the next post in threads I'm following. The same process works well on other fora - but not here. Here, it will somertimes completely miss a day or so of posts, and take me to a place a fair way further down a thread than I'd read thus far.
Am I doing something wrong, or is there a setting somewhere in my profile that I've got wrong?