Also the forum is missing counts on the home/category page sometimes. Probably all the same code.
As noted Firefox private window didn't call the other analytics URLs.
I opened Chrome, which I rarely use, and according to Chrome's inspector it looks like the odd calls are coming from Google:
cf1879ae-ebda-408c-978b-415afef431bf-image.png
and
a7e41613-1479-4374-a852-dee34bd84642-image.png
and look at that, it is, https://www.googletagmanager.com/gtm.js?id=GTM-N2P5PS2 contents:
...],["h","https://snap.licdn.com/li.lms-analytics/insight.min.js",...
...eventType"],[15,"k"]],["b","https://www.redditstatic.com/ads/pixel.js",[17,[15,"a"],...
Would not have expected that. It apparently does not call that in Firefox private window, but DOES in a Chrome incognito window. I wonder if it's detecting that somehow.
Anyway, digression over, back to the missing numbers. :)