Hello, i'm not entirely sure if its a bug or intended feature, but whoever aquires skill advancemnt scrolls I - III and skill optimisaiton scrolls I and II , the + on top of the HP/MP bar will appear ( as long as you dont have any skill advancements maxed out ). Forcing you to open and either upgrade the skill. It can also be removed by banking the optimisation scrolls. I know that its a small feature, but its really annoying and I have alot of friends complaining about it aswell.
Thank you for the attention! 
