Game replay ticks ? The bell is literally next to Mina, visibly, bullet is shot and then it jumps back, what game ticks.
Game has 64 ticks = > registers info 64 times a second
Replays have 20 ticks = > 20 times a second
Basically, in-game a tick is 1/64th of a second while in a replay a tick is 1/20th of a second, which is larger.
As a result, the replays don't accurately show anything registered between the first and the second tick, because, in-game, there have been about 3 or so ticks instead.
However, after the next tick happens in a replay, all the information is corrected to be exactly like it was in-game.
This is why replays always look weird regarding to shooting, and feel like the aim is a bit behind what you've actually done in-game, but you're still hitting the shots.
Once again, I'm not saying I'm an expert and I'm not saying this is 100% the issue. It is still very possible there's some actual error that happened in-game, but I just tried to provide a possible explanation.