Direct answer: Netmarble marked the August 7 (Fri) Server Patch as completed and again asked players to reconnect to apply the patch properly.
What to do after the patch
Fully exit and reconnect before troubleshooting a continuing Version 1.8 issue. Then check the latest known-issues notice and the separate Leaderboard Regular Season 3 notice if the problem affects rankings.
Official source: August 7 (Fri) Server Patch [Completed].