Hunter Survival of the Fittest not working at all

Issue with Class Skill not working Properly, or as Intended. Issue is not listed in the pre-set options.

While using the Hunter Ability, Survival of the Fittest, the tooltip reads that it reduces all damage by 40%. But when looking at the tooltip on the pet itself it is showing a value of 0%. And it seems to make no difference in combat when used.

The damage reduction also does not factor in while fighting when I use it, so I think it’s not working at all?

However when I use the pets innate skill ‘Obsidian Skin’ for 50% damage reduction, it works properly.

I have imgur links showing both if needed, but can’t post em in the post.