Ordered lists crash when change number

[George Craggs]

To replicate:

Create a numbered list
1. Some text
2. More text
3.

After 3 add another number like this
1. Some text
2. More text
3. 4.

Go back and delete the "3." and the application crashes with no error message

Version 0.60 running on Linux. Gtk version is (2, 24, 23). Pygtk version is (2, 24, 0).
This line was outputted on command "zim -D" but I'm unsure if it is relevant
"/usr/lib/python2.7/dist-packages/zim/gui/pageview.py:3444: GtkWarning: _gtk_text_buffer_get_line_log_attrs: assertion 'GTK_IS_TEXT_BUFFER (buffer)' failed
  buffer.delete(home, ourhome)"

[Jaap Karssenberg (jaap.karssenberg)]

Cannot reproduce in zim 0.64

[Launchpad Janitor (janitor)]

[Expired for Zim because there has been no activity for 60 days.]

[George Craggs (ubuntuon1)]

This bug is still present in 0.65

[George Craggs (ubuntuon1)]

I have found that this bug is only present in one of my notebooks. Attempting to replicate this bug in my second notebook results in the '4.' becoming a '3.' as expected.
I have also noticed that when this bug occurs, the next time that that notebook is opened, an error dialog appears stating that it could not find the notebook. The next time it is opened it opens without fault. It also opens with no problems when the application is exited normally.

[Launchpad Janitor (janitor)]

[Expired for Zim because there has been no activity for 60 days.]