I just switched to LibreElec to try Kodi 18.0 (alpha), on a Raspberry 3.
I installed the VNC addon from the Repo, and I can connect remotely, but I have no keyboard input. I can use my mouse, though. I should add that there is no physical (USB) keyboard attached to the Raspberry, only a Bluetooth micro-keyboard.
With my previous distrib (OSMC), and dispman_x locally compiled, same hardware, I had no problem.
Any idea?