Crashing iOS8 with nav bar.

[ghost]

Even though the screen size is small on the lower devices, I prefer to have a nav bar, less choppy when opening preferences and just looks better IMO.
However, when enabling the nav bar. everything is fine initially. Tap the toolbar button. Fine. rotate and then tap a button, or even a keyboard button and I get hit with:

*** Assertion failure in -[VT100Screen _getLineAtIndex:fromLine:], /MyPath/Classes/VT100/VT100Screen.m:1662
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: anIndex >= 0'

With some trouble shooting (long time to get to this point), I was able to pin point it to the nav bar. When disabled, this does not happen. But, this only happens with iOS 8. iOS 9 is perfectly fine.

Any thought and or suggestions? Thanks.