Roku Streambar Loses Connectivity Overnight O/S 15.04 Build 5534

After the recent software update to 15.04 Build 5534, my Streambar loses connectivity over night.  In the morning, it cannot find my network, or scan for a new wireless network. 

The temporary (daily) solution is to reboot the device, then it will automatically connect to  my network.  It works fine throughout the day, but next morning, same thing happens.  This has happened every day since the update on 10/28.

The Streambar was reliable and this never occurred before the 10/28 update to 15.04 Build 5534.

I also noticed the channel icons on the main screen are reordered, probably due to software update.

Thanks in advance for any advice on this issue.