Anyone encountered the absolute wipe where you DPS too quickly and Levi just wipes you regardless of whether you activated the converter or not?

It has happened to me 3 times today and apparently you can't get levi below 20% before he changes phase to the last phase. If you force his hp to below 20%, he'll do a wipe to the team.

I thought it was just a bad bug, but after testing it several times it is more or less confirmed that it will wipe you at 20% if you dps too quickly.

I wonder if there is anyone out there who has been encountering this. It's kinda sad that this kinda checks are in place, another one was with Ifrit EX, DPS too fast, he wipes you with Hellfire.