I just found an interaction in the EQ skill tree that I don’t think works as it should.
As per EQ unique weapon, it only converts the base damage to fire. This means that if I select the added base lightning damage from the skill tree, that damage should give the EQ spell the lightning tag. Making it both fire and lightning spell.
This currently does not happen and the spell retains only a fire tag. This was doublechecked with the 3 piece elemental set which only gives it 1 extra point and it would have given two if the spell had both tags. This shows that the issue is not visual.