Skills are not strengthening on the tree!
I'm sure someone somewhere has posted this, but why are skills not turning gold on the tree?
I recently completed a new skill on the tree, and usually when you've done all of the lessons in it, it turns gold... but this time, it was not full strength!
The same with when I want to strengthen a skill, even if I do the strengthen lesson multiple times, or even redo specific lessons on that skill, it just won't go gold. I usually like to see the skills which I have done recently and which I need to refresh my memory on, so this is quite an annoying issue.
Does anyone know how to fix it?