Comment # 1 on bug 1231825 from Jiri Slaby

6.11.4 contains:
98ccd44002d8 Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
e63125eec47d Bluetooth: btusb: Don't fail external suspend requests
4cb9807c9b53 Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change

I've committed to stable few moments ago:
4084286151fc Bluetooth: btusb: Fix not being able to reconnect after suspend
2c1dda2acc41 Bluetooth: btusb: Fix regression with fake CSR controllers
0a12:0001

which is supposed to fix one of the above.
So could you recheck :Backport once it builds?