Hi, I have posted my own tread but it seems it the same issue. So I will post my reply here.
I just tested serveral build.
Libreelec with kodi 16.1 -> CEC (marked als pulse) doens't work with my RPI 3 and sharp tv
Opeelec with kodi 16.1 -> CEC (marked als pulse) doens't work with my RPI 3 and sharp tv
Opeelec with kodi 15.1 -> CEC (marked a differente CEC adaptor) works with my RPI3 and sharp TV. And also work with my RPI 1
So it looks like there is problem with > 16.1 maybe there an option change the CEC adaptor? Or something else?
I now need two remotes again instead of my (extra) smartphone remote...If you need any log let me know.
One more thing...kodi sees all my adaptors only doesnt work on the first to options.
Kind regards