Using YafaRay the window is bigger than my screen

[giannis196]

Yesterday i successfully installed the YafaRay plugin and took my firsts render images with that.
After a while, i wanted to explore the YafaRay plugin to see all the things YaraRay can do but, i encountered a problem.

In the material properties i wanted to see the YafaRay options but when i clicked at the "+" button to expant the YafaRay options, i noted that the window was too big for the screen and i could not adjust it to make it smaller.

I have attach a image of the problem.

I need to see what's after the "Diffuse (Shiny Diffuse, Glossy, SSS)" because i find those options important.

So, can you do something for that?
I noted that, this window of "Material Properties" haven't got something to adjusted by the user.
Can you do something that allows the user to adjust the window from all directions?

Thanks!