Maybe you could open another thread for your CEC problem, because this is most probably not a problem of the nightlies.
Looking at the commits since 8.95.3, there is nothing, which could break CEC functionality.
The same goes for your remote/longpress problem.
But it seems, using your remote in keyboard mode allows you to configure longpress actions.
Though this is a completely different remote, a slightly modified solution could solve your problem:
Because I’m using a Harmony remote with Bluetooth, I can’t reproduce your problem.