I paired my Logitech mouse, which supports both Bluetooth and 2.4 Ghz wireless, to the Pixelbook. Today I went to use the Pixelbook and found that the mouse will not connect.
When I go in to settings, I see Bluetooth is turned off and I am unable to turn it back on, just as described on reddit 
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As the thread on reddit describes, to resolve the problem I had to shutdown and restart the Pixelbook. I observe that I am having this problem despite having the #newblue flag enabled. page