We see random crashes of different xfce components in Fedora 29 and above that may be related. backtrace of these crashes almost always starts with #0 magazine_chain_pop_head at gslice.c:538 I am reporting this against xfdesktop but we have see this as a crash notification from the automatic bug reporting tool (ABRT) against xfce4-panel, xfce4-appfinder and xfdesktop. Some users notice problems like desktop background disappearing but others see no sign of crash until ABRT notification shows up. Here are some bug downstream reports that have a lot more information - 1. xfce4-appfinder: magazine_chain_pop_head() https://bugzilla.redhat.com/show_bug.cgi?id=1671518 2. xfdesktop: magazine_chain_pop_head() https://bugzilla.redhat.com/show_bug.cgi?id=1669915 3. https://bugzilla.redhat.com/show_bug.cgi?id=1662098 xfce4-panel: magazine_chain_pop_head() Another Fedora packager suggested that it could be a gtk-core issue as mentioned in this report - https://bugzilla.redhat.com/show_bug.cgi?id=1667495 Please take a look. If this is a core GTK-3 issue, there is nothing to do, of course.
Based on https://bugzilla.redhat.com/show_bug.cgi?id=1667495#c22, it seems to be a gtk problem: https://bugzilla.redhat.com/buglist.cgi?quicksearch=magazine_chain_pop_head
This is likely related to bug 15679.
Based on the last comment onn https://bugzilla.redhat.com/show_bug.cgi?id=1661482 : "so I guess it might have been the apps menu during one of the .desktop files update." It should be related to #15679 which has been fixed in garcon git master and will be released in next garcon version.
*** This bug has been marked as a duplicate of bug 15679 ***