There has been an issue with the MythTV PVR on all Raspberry Pi 2 versions of Kodi causing Kodi to crash and restart. This has been resolved and an updated version of pvr.mythtv is available for download at https://www.canneasucre.org/owncloud/public.php?service=files&t=5f9f8b8e455bbdd3d0e95f4750925043&path=%2Fhelix%2FOpenELEC-5.0
I have installed this on mine tonight and I now have PVR functionality back and working. I assume this will flow through shortly for those who are unable/unwilling to get under the hood and tinker.
Link to the thread on GitHub: https://github.com/janbar/xbmc-pvr-addons/issues/34