Updated my 2866Vac to firmware 4.5.0 (BT), hoping it would cure the faults I reported previously.
Not so.
Addditionally, and this took half a day of my time to debug, WiFi password (PSK) is now truncated to 31 characters, not 63 as stated.
Type in a 32+ character wifi password and it is silently truncated to 31 characters.
Not great if your wifi clients have stored a 32+ character password!