Luke Cage doesn't take damage from damage over time debuffs after indestructable buff has ended.

If I say fight LC with Domino with the Massacre & Rulk synergy. At the start of the fight I hit him twice & do a heavy. His indestructible buff ends before the incinerate does, but he doesn't take damage once it ends. Surely he should start taking damage once his indestructible buff isn't active?
0
Comments
The synergy states:
Heavy Attacks for Domino inflict an Incinerate that deals damage equal to that Heavy Attack's damage over 2 seconds
If you hit Luke Cage with a heavy while Indestructible is active, it will do zero damage. The synergy the makes the incinerate buff do that same damage (zero) over 2 seconds.
It's working as intended.