Curse Despair + Hayoxi lineage wrong damage type

Hello.

After testing for a while, it seems that this combination converts to the wrong damage type.

It should be chaos but fore some reason I get fire.

How do I know? The targets gets ignited, something that doesnt happen with my other curses


Not sure if black covenant does something here but as it isnt a fire spell, it should do noithing.


EDIT: Its the black convenant for some reason. Tried it without it and no ignite. But with it, ignite. But its still chaos damage this way