Core dump when executing xfce4-power-manager --dump

$ xfce4-power-manager --dump
t: assertion 'G_IS_OBJECT (object)' failed
free(): invalid pointer
Aborted (core dumped)

$ gdb xfce4-power-manager core
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Reading symbols from xfce4-power-manager...
(No debugging symbols found in xfce4-power-manager)

warning: core file may not match specified executable file.
[New LWP 36494]
[New LWP 36495]
[New LWP 36496]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `xfce4-power-manager --dump'.
--Type <RET> for more, q to quit, c to continue without paging--
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f955d3e318b in raise () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0x7f955c28bf00 (LWP 36494))]
(gdb) bt 10
#0 0x00007f955d3e318b in raise () at /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f955d3c2859 in abort () at /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f955d42d3ee in () at /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007f955d43547c in () at /lib/x86_64-linux-gnu/libc.so.6
#4 0x00007f955d436cac in () at /lib/x86_64-linux-gnu/libc.so.6
#5 0x000055f69c9db305 in ()
#6 0x000055f69c9db768 in ()
#7 0x000055f69c9d442f in ()
#8 0x000055f69c9d56f4 in ()
#9 0x00007f955d87716d in g_type_create_instance ()
    at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
(More stack frames follow...)
(gdb) bt 50
#0 0x00007f955d3e318b in raise () at /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f955d3c2859 in abort () at /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f955d42d3ee in () at /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007f955d43547c in () at /lib/x86_64-linux-gnu/libc.so.6
#4 0x00007f955d436cac in () at /lib/x86_64-linux-gnu/libc.so.6
#5 0x000055f69c9db305 in ()
#6 0x000055f69c9db768 in ()
#7 0x000055f69c9d442f in ()
#8 0x000055f69c9d56f4 in ()
#9 0x00007f955d87716d in g_type_create_instance ()
    at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007f955d85634d in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007f955d857b45 in g_object_new_with_properties ()
    at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f955d8586f1 in g_object_new ()
    at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x000055f69c9d602c in ()
#14 0x000055f69c9d2887 in ()
#15 0x000055f69c9d0e4b in ()
#16 0x000055f69c9cad96 in ()
#17 0x00007f955d3c40b3 in __libc_start_main ()
    at /lib/x86_64-linux-gnu/libc.so.6
#18 0x000055f69c9cadce in ()
(gdb)

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xfce4-power-manager 1.6.6-1
Uname: Linux 5.6.7-050607-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:xfce
Date: Sun Apr 26 16:57:29 2020
InstallationDate: Installed on 2014-12-01 (1973 days ago)
InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723)
SourcePackage: xfce4-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)