As the title suggests, I was using Corvus Glaive support on GGoblin in conjunction with Doc Oc and Okoye. The nifty thing about the Corvus Glaive fortification component is that it also deals damage upon fortifying.
With no other special tiles on the board except 1 tentacle, I witness the Glaive support firing and dealing damage but no fortification of the tentacle.
Another match later, I’m against Daken and goons. The support then attempts to, unsuccessfully, fortify enemy strike tiles. They don’t fortify, but I do get the damage component affixed to the support (which is conveniently boosted by Okoye).
Edit:
So I have now run almost the entire Hulk sub event with this trio as this bug is very broken. I get to the essential nodes where I have to drop someone from the trio; I end up running Okoye (with royal talon applied) and GG (with the Corvus Glaive Level 4). Lo and behold, no specials propagate on the board, and my dear old friend Corvus Glaive decides to deal damage any way and fortify nothing.
I’m assuming the two components of the first perk are separate in the calculation of probability. The support reads “ xx% chance to fortify a friendly special tile and deal xxx damage”. I don’t know if this is a bug or not.