Description of problem: On MATE panel: 1. Click Applications 2. Hover over Internet 3. Hover over HexChat 4. Right click HexChat 5. Click "Add this launcher to panel" => Icon appears to the panel and mate-panel crashes. Version-Release number of selected component: mate-panel-1.24.1-1.fc32 Additional info: reporter: libreport-2.13.1 backtrace_rating: 4 cgroup: 0::/user.slice/user-20147.slice/session-9.scope cmdline: mate-panel crash_function: poll_for_event executable: /usr/bin/mate-panel journald_cursor: s=bfa20bbc4d0e495eab80cf53d1683130;i=a3592;b=d2b5352eecfe47e8bacd04b855a5e034;m=4b57a11e;t=5b17631c4aa14;x=c7f007d0a5da3d6f kernel: 5.8.13-200.fc32.x86_64 rootdir: / runlevel: N 5 type: CCpp uid: 20147 xsession_errors: mate-panel: xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. Potential duplicate: bug 1773218
Created attachment 1720899 [details] File: backtrace
Created attachment 1720900 [details] File: core_backtrace
Created attachment 1720901 [details] File: cpuinfo
Created attachment 1720902 [details] File: dso_list
Created attachment 1720903 [details] File: environ
Created attachment 1720904 [details] File: limits
Created attachment 1720905 [details] File: maps
Created attachment 1720906 [details] File: mountinfo
Created attachment 1720907 [details] File: open_fds
Created attachment 1720908 [details] File: proc_pid_status
Hmm, i can't reproduce the crash when adding hexchat to the panel. Tested with Mate development version on baremetal f32, and with an updated regular f32 version in VM. Does it happen every time when adding hexchat to panel? Does is happen with another application? Or was it one-shot?
*** This bug has been marked as a duplicate of bug 1758384 ***