I switch to windowed mode when I want to run Kodi while also doing something else on my box. This was broken in Jarvis and started working again in earlier Krypton Betas, but it stopped working again in the later Betas and RCs. When I try to switch screen modes the screen flashes and remains in full-screen.
kodi.log with debug logging part 1 http://pastebin.com/2ndc63Ej
part 2 http://pastebin.com/B4PNjxM9