Description of problem:
Lots of messages in bluetooth log like:
bluetoothd: src/adv_monitor.c:btd_adv_monitor_offload_supported() Manager is NULL, get offload support failed

Version-Release number of selected component (if applicable):
RHEL 8.7 Beta
bluez-5.63-1.el8.x86_64
kernel 4.18.0-416.el8.x86_64

How reproducible:
100% on my system

Steps to Reproduce:
1. systemctl start bluetooth
2. journalctl --unit=bluetooth
3.

Actual results:
Oct 13 02:15:57 gigabyte bluetoothd[773]: src/adv_monitor.c:btd_adv_monitor_offload_supported() Manager is NULL, get offload support failed
Oct 13 02:15:57 gigabyte bluetoothd[773]: src/adv_monitor.c:btd_adv_monitor_offload_supported() Manager is NULL, get offload support failed
Oct 13 02:15:59 gigabyte bluetoothd[773]: src/adv_monitor.c:btd_adv_monitor_offload_supported() Manager is NULL, get offload support failed
Oct 13 02:16:01 gigabyte bluetoothd[773]: src/adv_monitor.c:btd_adv_monitor_offload_supported() Manager is NULL, get offload support failed
...

Expected results:
no error messages

Additional info:

• sometimes audio playback over BT has audible lags
• this looks reported in upstream in https://github.com/bluez/bluez/issues/286