GnuCash crashes when I scroll over the account tabs in Wily Werewolf

[MegaBrutal]

I have GnuCash 2.6.6 rev 132c9e3+ on 2015-08-12.

When I have many tabs open (accounts and reports), so that they don't fit in the GnuCash windows horizontally, I used to scroll over the open accounts to select one that is not seen on the screen at the moment. The crash used to happen when I scroll to the left direction.

At the moment of crash, the following error message appears on console:

GLib-GIO:ERROR:/build/glib2.0-pRoDo9/glib2.0-2.46.0/./gio/gmenuexporter.c:256:g_menu_exporter_menu_items_changed: assertion failed: (position + removed <= g_sequence_get_length (menu->item_links))

ProblemType: RecoverableProblem
DistroRelease: Ubuntu 15.10
Package: gnucash 1:2.6.6-2ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-12.14-generic 4.2.1
Uname: Linux 4.2.0-12-generic x86_64
ActionNames:

ActionPaths: /com/canonical/unity/gtk/window/5;
Added: 1
ApportVersion: 2.19-0ubuntu1
Architecture: amd64
BusName: :1.83
CurrentDesktop: Unity
Date: Thu Oct 1 00:08:34 2015
DuplicateSignature: /usr/bin/gnucash:GMenuModelItemsChangedInvalidIndex
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gnucash
InstallationDate: Installed on 2013-10-01 (728 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
ItemCount: 1
LinkType: section
MenuLabel:

MenuName:

MenuPath: /com/canonical/unity/gtk/window/5
ParentActionNames: ;;;;;
ParentLinkType: sub menu
ParentMenuLabel:

ParentMenuName:

Position: -1
ProcCmdline: gnucash /tmp/mnt/thinkhome/Dokumentumok/GnuCash/Folyószámla.gnucash
Removed: 1
SourcePackage: gnucash
UpgradeStatus: Upgraded to wily on 2015-05-13 (140 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo