Guild Wars 2

So, I was doing some calculations on stat bonuses, and I noticed that I had an extra 15 points in power that I wasn’t supposed to. Normally, this wouldn’t be a problem, but being the curious person that I am, I decided to try to figure out the reason behind this. I narrowed down the extra bonus to be a result of my traits on top of the 200 power from the 20 points in the strength tree. It was only then did I notice that when I put 15 points into this tree, and got the second minor trait that my power shot up an extra 15 points. So, my questions is, has anyone else noticed this? Is the Building Momentum trait giving an extra 15 power?….or did the tooltip just fail to mention this bonus?

I have also seen this on my warrior. Going from 14 points to 15 points in the Strength trait line gives an extra 15 points in power. I’m not sure if this is a bug, or a hidden feature of the Building Momentum trait.