It’s still not correct. Check the response I made in this thread and check the Overviews of both Breach and Sage on my (Masat) team on that match. It shows it counts an extra 999 damage with 1 kill against themselves and counts this for ADR of the whole match, which is quite a hefty contribution. Unless you also fixed this bug and it doesn’t retroactively fix past matches.
EDIT: Screenshot where you can see Breach has 17 kills on the scoreboard but has 18 (9+9 on Defense+Attack) in the Overview for killing themselves (which is counted as a 6th enemy) once for 999 damage.