When I'm trying to get info about devices I get the following:

(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Class: 0x0

(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Paired: 0

(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Trusted: 0 [rw]

(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Blocked: 0 [rw]

(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Connected: 0
UUIDs: [
(bt-device:26340): GLib-GIO-CRITICAL **: 14:25:58.566: g_dbus_proxy_call_sync_internal: assertion 'error == NULL || *error == NULL' failed
Segmentation fault (core dumped)

It happens on openSUSE Tumbleweed.