It's hard to tell what's happening, but I think the first melee sound was from Abrams meleeing a creep behind a pillar, and the sound was late and came from behind me instead of where he was. I've been getting a lot of these "ghost" melee sounds in lane this patch.
this's been happening since the thursday patch
i think it could be related with spectating teammates with f buttons in some way because doing that also makes weird sound stuff happen
This has been happening a lot to me too. I've really noticed it in the side lanes but maybe that's because there are less distractions when you're solo laning.