Unfortunately I don't know if there is a solution to this problem, same issue with harmony remotes. I don't know how it works but the native remote control for chinese android devices such as Mi Box or projectors all behave the same : the bluetooth connection is disabled while the device is off/asleep. I guess that a special command (through bluetooth?) is sent by the native remote to wake up the device by pressing the power button

Actually when you say that "only one hue" is supported, I don't get it : the hue integration is useless at this point because the X1 hub will keep only the first bulb he finds from the Philips Hue hub. I don't think that there is any philips hue user with only one bulb considering the investment. Also one cannot choose which bulb to keep. Do we agree that this is a (major) bug not a feature right ?

Yes I didn't find a key or combination keys for the context menu. Instead I assigned the "C" key to a remote button in Kodi to raise the context menu, but that only works in Kodi

I kind of disagree with the comparison of the U1. I have the U1 too and the batteries drain more quickly than the X1 and I like the layout of the X1 About the missing keys : the U1 had the key numbers unlike the X1, but the harmony elite did not had key numbers too. But I agree that a few more keys would be great like stop, info, exit buttons. Also a few more buttons to set home automation (lights...) : I used them a lot on the harmony Also I miss that the remote won't turn on just when raising it Lastly, a touchscreen would be great for example for favorite channels (to compensate the lack of key numbers)

Remove the nvidia shield device and add a device "via bluetooth" -> Other You will get all the missing keys including the keyboard keys (useful for Kodi)