Desync bug. Known for a while and likely won't go anywhere. Essentially, the fight on the server was not the same as the one in your screen.
I just want to clarify a couple of misconceptions.
The fight on your screen is in fact the same as on the server. There are actually two fights on the server, one for your game and one for your opponent's game. Desyncs happen when the games on the server diverge from each other.
There have been multiple causes of desyncs since the release of Battlegrounds. It's not just a single thing that can cause it to happen. This current one is actually brand new. Fix incoming soon.
syah_hs
I just want to clarify a couple of misconceptions.
The fight on your screen is in fact the same as on the server. There are actually two fights on the server, one for your game and one for your opponent's game. Desyncs happen when the games on the server diverge from each other.
There have been multiple causes of desyncs since the release of Battlegrounds. It's not just a single thing that can cause it to happen. This current one is actually brand new. Fix incoming soon.