Blademaster bonus attacks often do zero damage

I've noticed this too many times now. The attack animations will fire but nothing happens to the enemy's health bar. It doesn't even say "blocked" or anything, just no damage.

Other threads talking about this: https://boards.na.leagueoflegends.com/en-us/c/TFT-bug-report/T1fQKm4h-fiora-blademaster-proc https://boards.na.leagueoflegends.com/de/c/teamfight-tactics/Bg2E03wi-blademaster-is-in-a-weakspot-right-now https://boards.na.leagueoflegends.com/en/c/TFT-bug-report/zk4HayXe-making-tristana-a-blademaster-causes-her-auto-attacks-to-not-register