Minecraft closing when shrinking window

What I expected to happen was...:
I expected minecraft to stay open

*What actually happened was...
When I clicked the button to make the window "pop down" into the taskbar, minecraft (crafting table icon) closed. Then the launcher said:

Client> #
Client> # A fatal error has been detected by the Java Runtime Environment:
Client> #
Client> #  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x4c0437d2, pid=6180, tid=4968
Client> #
Client> # JRE version: 7.0_21-b11
Client> # Java VM: Java HotSpot(TM) Client VM (23.21-b01 mixed mode windows-x86 )
Client> # Problematic frame:
Client> # C  [ig4icd32.dll+0x7237d2]  ShInitialize+0xe3dd2
Client> #
Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
Client> #
Client> # An error report file with more information is saved as:
Client> # C:\Users\bruker\AppData\Roaming\.minecraft\hs_err_pid6180.log
Client> #
Client> # If you would like to submit a bug report, please visit:
Client> #   http://bugreport.sun.com/bugreport/crash.jsp
Client> # The crash happened outside the Java Virtual Machine in native code.
Client> # See problematic frame for where to report the bug.
Client> #
Client> AL lib: (EE) alc_cleanup: 1 device not closed
Game ended with bad state (exit code 1)
Deleting C:\Users\bruker\AppData\Roaming\.minecraft\versions\1.6\1.6-natives-582749592665739
Couldn't delete C:\Users\bruker\AppData\Roaming\.minecraft\versions\1.6\1.6-natives-582749592665739 - scheduling for deletion upon exit

Steps to Reproduce:
1. Open the new minecraft launcher (for 1.6 minecraft)
2. Press "Play"
3. Press on the Crafting Table without pressing on anything inside minecraft (singleplayer, multiplayer, options ...)