empty uitextfield crash

Sorry: when I say double click I mean: I clicked on the textfield once to gain the focus (opens the keyboard) on this component then I click inside the text box again -> crash.

I have a symbolic breakpoint on CGPostError but the trace is not helpful:

CoreGraphics`CGPostError:

0x2e14ba70: sub sp, #12

0x2e14ba72: push {r7, lr}

0x2e14ba74: mov r7, sp

0x2e14ba76: sub sp, #4

0x2e14ba78: add.w r9, r7, #8

0x2e14ba7c: stm.w r9, {r1, r2, r3}

0x2e14ba80: add.w r1, r7, #8

0x2e14ba84: str r1, [sp]

0x2e14ba86: bl 0x2e14ba94 ; CGPostErrorWithArguments

0x2e14ba8a: add sp, #4

0x2e14ba8c: pop.w {r7, lr}

0x2e14ba90: add sp, #12

0x2e14ba92: bx lr

Trace goes:

CGPostError

UIApplicationMain

main

I found others talking about the same problem: http://stackoverflow.com/questions/19599266/invalid-context-0x0-under-ios-7-0-an d-system-degradation

I did what this post suggested. I created a new single page project and dropped a uitextfield on it from storyboard (no code of my own). Repeat the process I described click the text field, wait just a second, click it again -> whole bunch of CGContext warnings output to console window.