Indeed on the 2 latest builds (also MXIII-plus) the libreelec splash screen is gone. I get a "no signal" message on the screen. But libreelec works. Wait a little bit and suddenly the kodi screen appears. I had the same issue yesterday and downgraded again to the 14/06 build.
The bug of no screen saver is fixed in the new image 20170704 (now there is a download on the website).