xapp-sn-watcher raises some GLib-GObject-CRITICAL in xsession-errors

[Machion]

Distribution

Manjaro Stable

Package version

2.8.5

Graphics hardware in use

AMD Radeon HD 7790

Frequency

Always

Bug description

I don't see any strange behaviour while using the desktop, but in xsession-errors following messages appear:

(xapp-sn-watcher:1544): GLib-GObject-CRITICAL **: 09:14:58.986: g_object_set: assertion 'G_IS_OBJECT (object)' failed

(xapp-sn-watcher:1544): GLib-GIO-CRITICAL **: 09:14:58.986: g_dbus_interface_skeleton_flush: assertion 'G_IS_DBUS_INTERFACE_SKELETON (interface_)' failed

(xapp-sn-watcher:1544): GLib-GObject-CRITICAL **: 09:14:58.987: g_object_set: assertion 'G_IS_OBJECT (object)' failed

(xapp-sn-watcher:1544): GLib-GIO-CRITICAL **: 09:14:58.987: g_dbus_interface_skeleton_flush: assertion 'G_IS_DBUS_INTERFACE_SKELETON (interface_)' failed

(xapp-sn-watcher:1544): GLib-GObject-CRITICAL **: 09:14:58.987: invalid (NULL) pointer instance

(xapp-sn-watcher:1544): GLib-GObject-CRITICAL **: 09:14:58.987: signal_emit_valist_unlocked: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed

I don't know, if this is just on my system or a general "problem", but maybe this info is helpful in some way.

Steps to reproduce

Always when booting.

Expected behavior

No messages in xsession-errors.

Additional information

No response

[Pro-pra]

version 2.8.8 also broken for me :( nmmm may be rebuild fix this