Rc6-mce remote "Guide" key behaviour change

I had this too, I think it’s a change within Kodi that changed this functionality.

I have resolved this by adding a remap, I don’t know if both of these lines are needed but it works for me.

Create a new file here ~/.kodi/userdata/keymaps/remote.xml

Give it these contents.

<keymap>
  <global>
    <remote>
      <guide>ContextMenu</guide>
      <title>ContextMenu</title>
    </remote>
  </global>
</keymap>

Then reboot