Android - EGL_BAD_SURFACE when using home button

I have a bug that is Android specific. Multithreaded rendering is off (as that is the most common issue other threads suggest)

To reproduce the issue:

1 Load the game. Everything runs fine. Press the home button to go to the phone's main page

2 Tap on the game's icon. It highlights.

Unity takes a couple of seconds to load. During that time, hit the home button again.

3 Pause for a couple of seconds. Click on the game's icon. Result: The screen comes in black.

Question:

What might be happening? Where should I start looking? Does your game have the same issue?

Device: Nexus7 running 4.4.2

Unity: 4.3.4f1 ... using NGUI

Logcat output:

 W/Unity   ( 2708): Game.OnApplicationPause : Game.OnApplicationPause resume
 W/Unity   ( 2708):  
 W/Unity   ( 2708): (Filename: ./artifacts/AndroidManagedGenerated/UnityEngineDebug.cpp Line: 53)
 W/Unity   ( 2708): 
 E/BufferQueue(  178): [SurfaceView] dequeueBuffer: BufferQueue has been abandoned!
 W/Adreno-EGLSUB( 2708): : dequeue native buffer fail: No such device, buffer=0x0, handle=0x0
 W/Adreno-ES20( 2708): : GL_OUT_OF_MEMORY
 W/Adreno-EGL( 2708): : EGL_BAD_SURFACE
 E/BufferQueue(  178): [SurfaceView] dequeueBuffer: BufferQueue has been abandoned!
 W/Adreno-EGLSUB( 2708): : dequeue native buffer fail: No such device, buffer=0x0, handle=0x0
 E/BufferQueue(  178): [SurfaceView] connect: BufferQueue has been abandoned!
 E/libEGL  ( 2708): EGLNativeWindowType 0x760b40d0 already connected to another API
 E/libEGL  ( 2708): eglCreateWindowSurface:414 error 3003 (EGL_BAD_ALLOC)
 E/Unity   ( 2708): [EGL] Failed to create surface
 E/Unity   ( 2708):  
 E/Unity   ( 2708): (Filename:  Line: 132)
 E/Unity   ( 2708): 
 E/Unity   ( 2708): [EGL] Error:: EGL_BAD_ALLOC: EGL failed to allocate resources for the requested operation.
 E/Unity   ( 2708):  
 E/Unity   ( 2708): (Filename: ./PlatformDependent/AndroidPlayer/ContextGLES.cpp Line: 132)
 E/Unity   ( 2708): 
 I/Unity   ( 2708): Skipped rendering frame because GfxDevice is in invalid state (device lost)
 I/Unity   ( 2708):  
 I/Unity   ( 2708): (Filename:  Line: 1539)
 I/Unity   ( 2708): 
 E/libEGL  ( 2708): call to OpenGL ES API with no current context (logged once per thread)
 E/BufferQueue(  178): [SurfaceView] connect: BufferQueue has been abandoned!
 E/libEGL  ( 2708): EGLNativeWindowType 0x760b40d0 already connected to another API
 E/libEGL  ( 2708): eglCreateWindowSurface:414 error 3003 (EGL_BAD_ALLOC)
 E/Unity   ( 2708): [EGL] Failed to create surface
 E/Unity   ( 2708):  
 E/Unity   ( 2708): (Filename:  Line: 132)
 
 — and that repeats until the user terminates the app