Last element of LIST with u8g doesn't display

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Use u8g
2. Create a list of buttons
3. Select the last button
4. Do some custom drawing when that button is selected (m2.clear() + state 
change in callback)

What is the expected output? What do you see instead?
Nothing is shown, u8g functions have no effect, even drawPixel.
This only happens when the last element of the list is a button and that button 
is selected. Others buttons are not affected.


What version of the product are you using? On what operating system?
u8glib 1.17 with m2tklib 1.11 on Teensy 3.1

Original issue reported on code.google.com by [email protected] on 1 Mar 2015 at 7:05