The index of topics/threads show number of posts beyond the OP – i.e. shows “1” when a single post added to the OP.
Today, though I notice some (all s/w lengthy) where the count there e.g. “The Udana & The Dhammapada” says “43”, and when opened shows “n/44” where “n” is the current post positioned at, but when the whole thing is downloaded (via Command-P on iMac) the pdf file shows “UTC” counts up to 46!?!
(Checked also for the s/t cases where a post is added since one was opened as to new tab or downloaded.)