This is only an issue when using consistent fire.
When standing on the edge on a block, even if hitbox is in blue flame and we take 2 damage points, flame is orange.

Yes, this is an issue due to where I'm calling the check within the mixin class, I will attempt to fix tomorrow. Thanks!

I guess this is because most of the hitbox is out of the blue flame but this shouldn't be the case.
If any any part of the hitbox is in blue fire then overlay should be blue.