Going on Statistics then enlarging the Minecraft window will not make Statistics screen bigger

When you enlarge the Minecraft window when you are looking in the Statistics the Statistics will not become bigger
Affects 1.7.5 and 14w11b

Steps to Reproduce:
1. Open a world
2. Press ESC
3. Go on "Statistics"
4. Enlarge the Minecraft window

See screenshots
I know that is a minor bug but it's still a bug
(sorry for my bad english)