Elemental overload not working with flamewood support

Not sure if this interaction should be working due to the "weird" nature of flamewood. When flamewood crits from a totem with no damage skill (and elemental overload active), avenging flame should somehow gain elemental overload (even though it itself is not a skill gem). This seems like an oversight or coding edge case.

After testing with my friend in PVP. It looks like ele overload is working, but is only giving an exact 20% damage boost, instead of 40%. This seems to be a bug.