Unsure if there is any significance to the following.
But I did some super advanced calculus. (Total hks I had, minus what it displayed after). And came to a number that brought me to this date: The Av weekend on the 14-16th October in 2022.
(I am not a content creator, but sometimes I record entire games so I can review and learn from my own mistakes/ positioning, and I actually still had some footage of that weekend).
To be exact at 196597 kills, the closest I was able to narrow this down was a game I fought 19:51- 20:53 at 14.10.2022.
That was only the second game of the weekend for me.
https://ibb.co/dPSkK2J
the only point in that game I opened the honor tab
https://ibb.co/82RK06j
end
So for me all the kills before the 14th are no longer counted, only the kills I did on and after the 14th are counted. That is my assumption at least, as it fits exactly. If possible could check if this also roughly correlates to your cases? It may also be that the actual issue is leading up to that date, as I do tend to farm on weekdays -and play bgs on weekends.
But this 14.10 date was not near the end of SoM afaik? They prolonged the som shutdown for a long time; all the way into feb 14th. So I have no ideas as to why this date specifically.
However there was an issue a few days preceding this at 11.10.2022; a large ddos attack that brought the world server down, with players unable to logg in through bnet for a few days. Might be something?
https://twitter.com/BlizzardCS/status/1579696745524916224
Also (very very likely unrelated) but something odd/fun that happened in the middle of that game. Exactly at 20:20 I disconnected, (did the old cmd toilet flush) then upon logging in at 20:22 14/10/2022. I was greeted with an odd menu popup, just titled;
|Tengil’s journey|. With an actual diary? I have never seen this before or since. But I think this is questie related (given the error also shown).
https://ibb.co/Dz0nRpy
Assumed it was some sort of addon sperging, closed it fast, and didnt give it any thought. There was also a red spacebar looking thing that appeared on the side. The bar stayed with me for several matches until I restarted the game, finishing a match/ reloading ui would not remove it.
(I do not update my addons very frequently, only when I have to. Afraid I am rather lazy. To my knowledge none of my addons or weak auras had anything that should do that, but yea probably questie).