Cant say it surprises me but that seems a bit different.
On era after the magnificent honor update (destroying the ranking system); Players would lose 80-70% (it varied) of their total lifetime kills when they died. Did not matter where they died, if in bgs or raids. Just upon getting ressed, you where riped. Me I riped in zg afk and lost nearly -200k.
Apparently it was “fixed” and stopped occurring after, but no players ever saw their hks again. It seems rare exceptions where they could not restore, meant virtually everyone. If you had video or photo proof, that meant nothing. Only if you had reach and where a streamer would you have a slight possibility to have anything done.
The video in this post you can see it happening live in action.