Anyone noticed this on the HomeHub5?

I've got a HH5 running on the latest firmware. I did a wifi scan the other day and noticed 3 other HH5's all running on channel 11 (2.4ghz).

Weird I thought, considering smart wireless was turned on so I turned it off. I then tried changing my wireless channel to 1 and submitted it.

It's sticking on channel 11 no matter what channel I select. Anyone else experiencing the same?