Games halts when pressing 'E' key, Null Pointer Exception in Generated bug reports

When hitting the E key in a certain single-player survival game, I get this error. It is reproducible, happens every time I hit the E key.

I have attached two crash reports.

The Java stacktrace shows a NPE:

Stacktrace:
at org.lwjgl.opengl.AWTUtil.getPointerLocation(AWTUtil.java:120)
at org.lwjgl.opengl.AWTUtil.getCursorPosition(AWTUtil.java:138)
at org.lwjgl.opengl.MouseEventQueue.resetCursorToCenter(MouseEventQueue.java:115)
at org.lwjgl.opengl.MacOSXMouseEventQueue.resetCursorToCenter(MacOSXMouseEventQueue.java:71)
at org.lwjgl.opengl.MouseEventQueue.setGrabbed(MouseEventQueue.java:101)
at org.lwjgl.opengl.MacOSXMouseEventQueue.setGrabbed(MacOSXMouseEventQueue.java:57)
at org.lwjgl.opengl.MacOSXDisplay.grabMouse(MacOSXDisplay.java:347)
at org.lwjgl.input.Mouse.setGrabbed(Mouse.java:636)
at asr.b(SourceFile:32)
at net.minecraft.client.Minecraft.i(SourceFile:918)
at net.minecraft.client.Minecraft.a(SourceFile:452)