On the update screen of the launcher, when resizing the window, it fails to resize properly, curring off text and rendering objects on top of each other.

What I expected to happen was...:
The launcher window should resize itself to display all text.

What actually happened was...:
The launcher window failed to resize, and rendered text and objects on the screen incorrectly.

Steps to Reproduce:
1. Start the Minecraft launcher.
2. Open Options, choose to Force update and hit OK.
3. Log in, the download will now start.
4. While it downloads, resize the window to a much smaller size, and you should see strange things happening.

Screenshots:
Screenshots are attached.
The first screenshot (LauncherScale.png) shows the bug with rendering text outside the window on an error screen where I first found the bug.
The second screenshot (LauncherScaleProgressBar.png) shows the bug on the update screen.