Hi Tobei, this is not a visual bug.

I actually used it prior to posting my previous thread, as you can see in the screenshot there is +60 attack and +50 ninjutsu. That ninjutsu came from a tool essence.

This is clearly a bug which is why I am creating this post.

If you need further information to investigate my account please let me know. I can't have all my ninjutsu tool essences taking a -10 hit.