BBS has difficulty tracking my last read post?

Here’s an odd “off by two” situation. I read the How to season a cast iron pan thread when it first appeared, but I didn’t read it long enough to add it to start tracking it. This afternoon I found the thread and read it all the way to the ‘automatically closed’ post at the end. Later, I found this in my Unread thread section:


Clicking on the number did show me the final two posts in the thread, even though I’d already seen and read them.

Edit: And just now, I spotted 3 new posts in the Comments go where? lament thread Clicking on grey number took me to the thread but only showed me the final two, so I’m guessing there’s still an “off by one” somewhere.