Another thing I’ve noticed since first installing 4.9 is that my Kodi Callbacks add-on doesn’t seem to work so well any more.
A little background: an ongoing problem that I have is that if exports on a NAS (in my case a Windows 10 PC) are accessed via autofs, there’s no obvious way to have Kodi send the server a WOL packet if the server has gone into sleep mode. (Since the remote export looks to Kodi just like a local folder). My work-around is to install Kodi Callbacks, set up a task which runs the WOL function, and then an event which fires whenever there is activity after 1 or more seconds of idling - so, for practical purposes, it sends a WOL packet to the server every time I press a button, which keeps the server awake.
This used to work fairly well under 3.14, but since I first installed a 4.9 test build, it has been rather flakey, and the event seems to have stopped firing almost entirely now.
The logs in my previous post would probably cover this as well.